Cherry-pick elastic#14143 to 7.5: [Metricbeat] Add FailOnRequired whe…

…n applying schema (elastic#14202)

* [Metricbeat] Add FailOnRequired when applying schema (elastic#14143)

* Add FailOnRequired when applying schema

(cherry picked from commit 972900f)

CHANGELOG.next.asciidoc

@@ -59,6 +59,7 @@ https://github.com/elastic/beats/compare/v7.0.0-alpha2...master[Check the HEAD d
 *Metricbeat*
 
 - Fix performance counter values for windows/perfmon metricset.{issue}14036[14036] {pull}14039[14039] {pull}14108[14108]
+- Add FailOnRequired when applying schema and fix metric names in mongodb metrics metricset. {pull}14143[14143]
 
 *Packetbeat*
 

metricbeat/docs/fields.asciidoc

@@ -19430,7 +19430,7 @@ Reports data from the query execution system.
 
 
 
-*`mongodb.metrics.query_executor.scanned_indexes`*::
+*`mongodb.metrics.query_executor.scanned_indexes.count`*::
 +
 --
 The total number of index items scanned during queries and query-plan evaluation.
@@ -19440,7 +19440,7 @@ type: long
 
 --
 
-*`mongodb.metrics.query_executor.scanned_documents`*::
+*`mongodb.metrics.query_executor.scanned_documents.count`*::
 +
 --
 The total number of documents scanned during queries and query-plan evaluation.
@@ -19884,7 +19884,7 @@ Reports on the operation of the resource use of the ttl index process.
 
 
 
-*`mongodb.metrics.ttl.deleted_documents`*::
+*`mongodb.metrics.ttl.deleted_documents.count`*::
 +
 --
 The total number of documents deleted from collections with a ttl index.
@@ -19894,7 +19894,7 @@ type: long
 
 --
 
-*`mongodb.metrics.ttl.passes`*::
+*`mongodb.metrics.ttl.passes.count`*::
 +
 --
 The number of times the background process removes documents from collections with a ttl index.