Monitoring data can now be stored in `metrics-*` patterns when collected through elastic-agent. [Our documentation](https://www.elastic.co/guide/en/kibana/current/monitoring-data.html) recommends to use the `monitoring_user` role to view the data in Stack Monitoring application but that role does not have permissions to read from the metrics pattern.

`monitoring_user` should be allowed the same permissions on `metrics-*` as `.monitoring-*`
x-pack/plugin/core/src/test/java/org/elasticsearch/xpack/core/security/authz/store/ReservedRolesStoreTests.java
final String internalSecurityIndex = randomFrom(
            TestRestrictedIndices.INTERNAL_SECURITY_MAIN_INDEX_6,
            TestRestrictedIndices.INTERNAL_SECURITY_MAIN_INDEX_7
        );
        final Metadata metadata = new Metadata.Builder().put(
            new IndexMetadata.Builder("a1").settings(indexSettings).numberOfShards(1).numberOfReplicas(0).build(),
            true
        )
            .put(new IndexMetadata.Builder("a2").settings(indexSettings).numberOfShards(1).numberOfReplicas(0).build(), true)
            .put(new IndexMetadata.Builder("aaaaaa").settings(indexSettings).numberOfShards(1).numberOfReplicas(0).build(), true)
            .put(new IndexMetadata.Builder("bbbbb").settings(indexSettings).numberOfShards(1).numberOfReplicas(0).build(), true)
            .put(
                new IndexMetadata.Builder("b").settings(indexSettings)
                    .numberOfShards(1)
                    .numberOfReplicas(0)
                    .putAlias(new AliasMetadata.Builder("ab").build())
                    .putAlias(new AliasMetadata.Builder("ba").build())
                    .build(),
                true
            )
            .put(
                new IndexMetadata.Builder(internalSecurityIndex).settings(indexSettings)
                    .numberOfShards(1)
                    .numberOfReplicas(0)
                    .putAlias(new AliasMetadata.Builder(TestRestrictedIndices.SECURITY_MAIN_ALIAS).build())
                    .build(),
                true
            )
            .build();
        FieldPermissionsCache fieldPermissionsCache = new FieldPermissionsCache(Settings.EMPTY);