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
assertThat(role.indices().allowedIndicesMatcher(GetAction.NAME).test(mockIndexAbstraction(index)), is(true));
        assertThat(role.indices().allowedIndicesMatcher(IndexAction.NAME).test(mockIndexAbstraction(index)), is(false));
        assertThat(role.indices().allowedIndicesMatcher(UpdateAction.NAME).test(mockIndexAbstraction(index)), is(false));
        assertThat(role.indices().allowedIndicesMatcher(DeleteAction.NAME).test(mockIndexAbstraction(index)), is(false));
        assertThat(role.indices().allowedIndicesMatcher(BulkAction.NAME).test(mockIndexAbstraction(index)), is(false));
        assertNoAccessAllowed(role, TestRestrictedIndices.SAMPLE_RESTRICTED_NAMES);
        assertNoAccessAllowed(role, XPackPlugin.ASYNC_RESULTS_INDEX + randomAlphaOfLengthBetween(0, 2));
    }
    private void assertViewIndexMetadata(Role role, String index) {
        Arrays.asList(
            GetAliasesAction.NAME,
            GetIndexAction.NAME,
            GetFieldMappingsAction.NAME + "*",
            GetMappingsAction.NAME,
            ClusterSearchShardsAction.NAME,
            ValidateQueryAction.NAME + "*",
            GetSettingsAction.NAME,
            ExplainLifecycleAction.NAME,
            GetDataStreamAction.NAME,
            ResolveIndexAction.NAME,
            FieldCapabilitiesAction.NAME + "*",
            GetRollupIndexCapsAction.NAME + "*"
        ).forEach(action -> assertThat(role.indices().allowedIndicesMatcher(action).test(mockIndexAbstraction(index)), is(true)));
    }
    private void assertNoAccessAllowed(Role role, Collection<String> indices) {
        for (String index : indices) {
            assertNoAccessAllowed(role, index);
        }
    }
    private void assertNoAccessAllowed(Role role, String index) {