Add new native fields for SPO connector - certificate authenticate (e…

…lastic#205337)

## Summary

This PR reflects the changes done in
elastic/connectors#3064: update of Sharepoint
Online native connector configurable fields.

### Checklist

Check the PR satisfies following conditions. 

Reviewers should verify this PR satisfies this list as well.

- [ ] Any text added follows [EUI's writing
guidelines](https://elastic.github.io/eui/#/guidelines/writing), uses
sentence case text and includes [i18n
support](https://github.com/elastic/kibana/blob/main/packages/kbn-i18n/README.md)
- [ ]
[Documentation](https://www.elastic.co/guide/en/kibana/master/development-documentation.html)
was added for features that require explanation or tutorials
- [ ] [Unit or functional
tests](https://www.elastic.co/guide/en/kibana/master/development-tests.html)
were updated or added to match the most common scenarios
- [ ] If a plugin configuration key changed, check if it needs to be
allowlisted in the cloud and added to the [docker
list](https://github.com/elastic/kibana/blob/main/src/dev/build/tasks/os_packages/docker_generator/resources/base/bin/kibana-docker)
- [ ] This was checked for breaking HTTP API changes, and any breaking
changes have been approved by the breaking-change committee. The
`release_note:breaking` label should be applied in these situations.
- [ ] [Flaky Test
Runner](https://ci-stats.kibana.dev/trigger_flaky_test_runner/1) was
used on any tests changed
- [ ] The PR description includes the appropriate Release Notes section,
and the correct `release_note:*` label is applied per the
[guidelines](https://www.elastic.co/guide/en/kibana/master/contributing.html#kibana-release-notes-process)

src/platform/packages/shared/kbn-search-connectors/types/native_connectors.ts

@@ -4242,6 +4242,45 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
         validations: [],
         value: '',
       },
+      auth_method: {
+        default_value: null,
+        depends_on: [],
+        display: DROPDOWN,
+        label: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.authMethodLabel',
+          {
+            defaultMessage: 'Authentication Method',
+          }
+        ),
+        options: [
+          {
+            label: translate(
+              'searchConnectors.nativeConnectors.sharepoint_online.configuration.authMethod.clientSecretLabel',
+              {
+                defaultMessage: 'Client Secret',
+              }
+            ),
+            value: 'secret',
+          },
+          {
+            label: translate(
+              'searchConnectors.nativeConnectors.sharepoint_online.configuration.authMethod.certificateLabel',
+              {
+                defaultMessage: 'Certificate',
+              }
+            ),
+            value: 'certificate',
+          },
+        ],
+        order: 4,
+        required: true,
+        sensitive: false,
+        tooltip: null,
+        type: STRING,
+        ui_restrictions: [],
+        validations: [],
+        value: 'certificate',
+      },
       secret_value: {
         default_value: null,
         depends_on: [],
@@ -4253,7 +4292,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 4,
+        order: 5,
         required: true,
         sensitive: true,
         tooltip: '',
@@ -4262,6 +4301,56 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
         validations: [],
         value: '',
       },
+      certificate: {
+        default_value: null,
+        depends_on: [
+          {
+            field: 'auth_method',
+            value: 'certificate',
+          },
+        ],
+        display: TEXTAREA,
+        label: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.certificateLabel',
+          {
+            defaultMessage: 'Content of certificate file',
+          }
+        ),
+        options: [],
+        order: 6,
+        required: true,
+        sensitive: true,
+        tooltip: null,
+        type: STRING,
+        ui_restrictions: [],
+        validations: [],
+        value: '',
+      },
+      private_key: {
+        default_value: null,
+        depends_on: [
+          {
+            field: 'auth_method',
+            value: 'certificate',
+          },
+        ],
+        display: TEXTAREA,
+        label: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.privateKeyLabel',
+          {
+            defaultMessage: 'Content of private key file',
+          }
+        ),
+        options: [],
+        order: 7,
+        required: true,
+        sensitive: true,
+        tooltip: null,
+        type: STRING,
+        ui_restrictions: [],
+        validations: [],
+        value: '',
+      },
       site_collections: {
         default_value: null,
         depends_on: [],
@@ -4273,7 +4362,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 5,
+        order: 8,
         required: true,
         sensitive: false,
         tooltip: translate(
@@ -4289,13 +4378,63 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
         validations: [],
         value: '*',
       },
+      enumerate_all_sites: {
+        default_value: true,
+        depends_on: [],
+        display: TOGGLE,
+        label: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.enumerateAllSitesLabel',
+          { defaultMessage: 'Enumerate all sites?' }
+        ),
+        options: [],
+        order: 9,
+        required: false,
+        sensitive: false,
+        tooltip: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.enumerateAllSitesTooltip',
+          {
+            defaultMessage:
+              'If enabled, sites will be fetched in bulk, then filtered down to the configured list of sites. This is efficient when syncing many sites. If disabled, each configured site will be fetched with an individual request. This is efficient when syncing fewer sites.',
+          }
+        ),
+        type: BOOLEAN,
+        ui_restrictions: [],
+        validations: [],
+        value: true,
+      },
+      fetch_subsites: {
+        default_value: false,
+        depends_on: [{ field: 'enumerate_all_sites', value: false }],
+        display: TOGGLE,
+        label: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.fetchSubsitesLabel',
+          {
+            defaultMessage: 'Fetch sub-sites of configured sites?',
+          }
+        ),
+        options: [],
+        order: 10,
+        required: false,
+        sensitive: false,
+        tooltip: translate(
+          'searchConnectors.nativeConnectors.sharepoint_online.configuration.fetchSubsitesTooltip',
+          {
+            defaultMessage:
+              'Whether subsites of the configured site(s) should be automatically fetched.',
+          }
+        ),
+        type: BOOLEAN,
+        ui_restrictions: [],
+        validations: [],
+        value: true,
+      },
       use_text_extraction_service: {
         default_value: false,
         depends_on: [],
         display: TOGGLE,
         label: USE_TEXT_EXTRACTION_SERVICE_LABEL,
         options: [],
-        order: 6,
+        order: 11,
         required: true,
         sensitive: false,
         tooltip: USE_TEXT_EXTRACTION_SERVICE_TOOLTIP,
@@ -4315,7 +4454,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 7,
+        order: 12,
         required: true,
         sensitive: false,
         tooltip: translate(
@@ -4346,7 +4485,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 8,
+        order: 13,
         required: true,
         sensitive: false,
         tooltip: translate(
@@ -4377,7 +4516,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 9,
+        order: 14,
         required: true,
         sensitive: false,
         tooltip: translate(
@@ -4408,7 +4547,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 10,
+        order: 15,
         required: true,
         sensitive: false,
         tooltip: translate(
@@ -4439,7 +4578,7 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
           }
         ),
         options: [],
-        order: 11,
+        order: 16,
         required: true,
         sensitive: false,
         tooltip: translate(
@@ -4454,56 +4593,6 @@ export const NATIVE_CONNECTOR_DEFINITIONS: Record<string, NativeConnector | unde
         validations: [],
         value: true,
       },
-      enumerate_all_sites: {
-        default_value: true,
-        depends_on: [],
-        display: TOGGLE,
-        label: translate(
-          'searchConnectors.nativeConnectors.sharepoint_online.configuration.enumerateAllSitesLabel',
-          { defaultMessage: 'Enumerate all sites?' }
-        ),
-        options: [],
-        order: 6,
-        required: false,
-        sensitive: false,
-        tooltip: translate(
-          'searchConnectors.nativeConnectors.sharepoint_online.configuration.enumerateAllSitesTooltip',
-          {
-            defaultMessage:
-              'If enabled, sites will be fetched in bulk, then filtered down to the configured list of sites. This is efficient when syncing many sites. If disabled, each configured site will be fetched with an individual request. This is efficient when syncing fewer sites.',
-          }
-        ),
-        type: BOOLEAN,
-        ui_restrictions: [],
-        validations: [],
-        value: true,
-      },
-      fetch_subsites: {
-        default_value: false,
-        depends_on: [{ field: 'enumerate_all_sites', value: false }],
-        display: TOGGLE,
-        label: translate(
-          'searchConnectors.nativeConnectors.sharepoint_online.configuration.fetchSubsitesLabel',
-          {
-            defaultMessage: 'Fetch sub-sites of configured sites?',
-          }
-        ),
-        options: [],
-        order: 7,
-        required: false,
-        sensitive: false,
-        tooltip: translate(
-          'searchConnectors.nativeConnectors.sharepoint_online.configuration.fetchSubsitesTooltip',
-          {
-            defaultMessage:
-              'Whether subsites of the configured site(s) should be automatically fetched.',
-          }
-        ),
-        type: BOOLEAN,
-        ui_restrictions: [],
-        validations: [],
-        value: true,
-      },
     },
     features: {
       [SYNC_RULES]: {