Update fields.yml in azure module

CHANGELOG.next.asciidoc

@@ -335,6 +335,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 - Fix resource tags in aws cloudwatch metricset {issue}20326[20326]  {pull}20385[20385]
 - Fix ec2 disk and network metrics to use Sum statistic method. {pull}20680[20680]
 - Fill cloud.account.name with accountID if account alias doesn't exist. {pull}20736[20736]
+- Adds missing `monitor` object inside event azure data. {pull}20918[20918]
 
 *Packetbeat*
 

x-pack/metricbeat/module/azure/data.go

@@ -84,7 +84,7 @@ func EventsMapping(metrics []Metric, metricset string, report mb.ReporterV2) err
 				event, metricList = createEvent(timestamp, defaultMetric, groupTimeValues)
 			}
 			if metricset == nativeMetricset {
-				event.ModuleFields.Put("metrics", metricList)
+				event.ModuleFields.Put(fmt.Sprintf("%s.metrics", nativeMetricset), metricList)
 			} else {
 				for key, metric := range metricList {
 					event.MetricSetFields.Put(key, metric)

x-pack/metricbeat/module/azure/monitor/_meta/data.json

@@ -1,15 +1,17 @@
 {
     "@timestamp": "2017-10-12T08:05:34.853Z",
     "azure": {
-        "metrics": {
-            "data_usage": {
-                "total": 0
-            },
-            "document_count": {
-                "total": 0
-            },
-            "document_quota": {
-                "total": 53687091200
+        "monitor": {
+            "metrics": {
+                "data_usage": {
+                    "total": 131072
+                },
+                "document_count": {
+                    "total": 2
+                },
+                "document_quota": {
+                    "total": 107374182400
+                }
             }
         },
         "namespace": "Microsoft.DocumentDb/databaseAccounts",
@@ -20,12 +22,12 @@
             },
             "type": "Microsoft.DocumentDb/databaseAccounts"
         },
-        "subscription_id": "fd675b6f-b5e5-426e-ac45-d1f876d0ffa6",
+        "subscription_id": "70bd6e77-4b1e-4835-8896-db77b8eef364",
         "timegrain": "PT5M"
     },
     "cloud": {
         "instance": {
-            "id": "/subscriptions/fd675b6f-b5e5-426e-ac45-d1f876d0ffa6/resourceGroups/obs-infrastructure/providers/Microsoft.DocumentDb/databaseAccounts/obsaccount",
+            "id": "/subscriptions/70bd6e77-4b1e-4835-8896-db77b8eef364/resourceGroups/obs-infrastructure/providers/Microsoft.DocumentDb/databaseAccounts/obsaccount",
             "name": "obsaccount"
         },
         "provider": "azure",
@@ -36,11 +38,15 @@
         "duration": 115000,
         "module": "azure"
     },
+    "host": {
+        "id": "/subscriptions/70bd6e77-4b1e-4835-8896-db77b8eef364/resourceGroups/obs-infrastructure/providers/Microsoft.DocumentDb/databaseAccounts/obsaccount",
+        "name": "obsaccount"
+    },
     "metricset": {
         "name": "monitor",
         "period": 10000
     },
     "service": {
         "type": "azure"
     }
-}
+}