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
SortedMap<String, IndexAbstraction> lookup = metadata.getIndicesLookup();
        IndicesAccessControl iac = superuserRole.indices()
            .authorize(SearchAction.NAME, Sets.newHashSet("a1", "ba"), lookup, fieldPermissionsCache);
        assertThat(iac.hasIndexPermissions("a1"), is(true));
        assertThat(iac.hasIndexPermissions("b"), is(true));
        iac = superuserRole.indices().authorize(DeleteIndexAction.NAME, Sets.newHashSet("a1", "ba"), lookup, fieldPermissionsCache);
        assertThat(iac.hasIndexPermissions("a1"), is(true));
        assertThat(iac.hasIndexPermissions("b"), is(true));
        iac = superuserRole.indices().authorize(IndexAction.NAME, Sets.newHashSet("a2", "ba"), lookup, fieldPermissionsCache);
        assertThat(iac.hasIndexPermissions("a2"), is(true));
        assertThat(iac.hasIndexPermissions("b"), is(true));
        iac = superuserRole.indices().authorize(UpdateSettingsAction.NAME, Sets.newHashSet("aaaaaa", "ba"), lookup, fieldPermissionsCache);
        assertThat(iac.hasIndexPermissions("aaaaaa"), is(true));
        assertThat(iac.hasIndexPermissions("b"), is(true));
        
        iac = superuserRole.indices()
            .authorize(
                randomFrom(SearchAction.NAME, GetIndexAction.NAME),
                Sets.newHashSet(TestRestrictedIndices.SECURITY_MAIN_ALIAS),
                lookup,
                fieldPermissionsCache
            );
        assertThat("For " + iac, iac.hasIndexPermissions(TestRestrictedIndices.SECURITY_MAIN_ALIAS), is(true));
        assertThat("For " + iac, iac.hasIndexPermissions(internalSecurityIndex), is(true));
        
        iac = superuserRole.indices()
            .authorize(
                randomFrom(IndexAction.NAME, DeleteIndexAction.NAME),
                Sets.newHashSet(TestRestrictedIndices.SECURITY_MAIN_ALIAS),
                lookup,