try to auto-discover the istio configmap

roles/default/kiali-deploy/tasks/get-discovery-selector-namespaces.yml

@@ -17,27 +17,29 @@
   - kiali_vars.deployment.cluster_wide_access == False
   - kiali_vars.deployment.discovery_selectors.default is defined
 
-### TODO
-- name: Determine Istio ConfigMap name if we need to read it to find the discovery selectors
+- name: Find the Istio ConfigMap if we need to read it to find the discovery selectors
+  vars:
+    all_configmaps: "{{ query(k8s_plugin, kind='ConfigMap', namespace=kiali_vars.istio_namespace, errors='warn') }}"
   set_fact:
-    istio_configmap_name: "istio"
+    istio_configmap: "{{ item }}"
+  loop: "{{ all_configmaps }}"
   when:
   - kiali_vars.deployment.cluster_wide_access == False
   - discovery_selectors is not defined
+  - item.data is defined
+  - item.data.mesh is defined
 
 - name: Get Istio discovery selectors if they are defined and if we need them
   vars:
-    istio_configmap: "{{ lookup(k8s_plugin, kind='ConfigMap', namespace=kiali_vars.istio_namespace, resource_name=istio_configmap_name, errors='warn') | from_yaml }}"
-    istio_configmap_data_mesh: "{{ istio_configmap.data.mesh | default({}) | from_yaml }}"
+    istio_discovery_selectors: "{{ (istio_configmap.data.mesh | from_yaml).discoverySelectors | default ([]) }}"
   set_fact:
-    discovery_selectors: "{{ istio_configmap_data_mesh.discoverySelectors }}"
+    discovery_selectors: "{{ istio_discovery_selectors }}"
+    using_istio_discovery_selectors: true
   when:
   - kiali_vars.deployment.cluster_wide_access == False
   - discovery_selectors is not defined
-  - istio_configmap_name is defined
-  - istio_configmap.data is defined
-  - istio_configmap.data.mesh is defined
-  - istio_configmap_data_mesh.discoverySelectors is defined
+  - istio_configmap is defined
+  - istio_discovery_selectors | length > 0
 
 - name: If cluster wide access is disabled and no discovery selectors are found, warn the user that this is probably not what they want
   debug:
@@ -47,6 +49,12 @@
   - kiali_vars.discovery_selectors.default is not defined
   - discovery_selectors is not defined
 
+- debug:
+    msg: "Using discovery selectors found in Istio ConfigMap [{{ istio_configmap.metadata.name }}] from namespace [{{ kiali_vars.istio_namespace }}]."
+  when:
+  - using_istio_discovery_selectors is defined
+  - using_istio_discovery_selectors == True
+
 - name: Find namespaces selected by the discovery selectors
   set_fact:
     discovery_selector_namespaces_raw: "{{ (discovery_selector_namespaces_raw|default([]) + query(k8s_plugin, kind='Namespace', label_selector=(item|join(',')))) | unique }}"