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/security/src/test/java/org/elasticsearch/xpack/security/authz/RBACEngineTests.java
.build(),
                ResourcePrivileges.builder("baz/bar/foo")
                    .addPrivileges(
                        MapBuilder.newMapBuilder(new LinkedHashMap<String, Boolean>())
                            .put("read", false)
                            .put("write", false)
                            .put("all", false)
                            .map()
                    )
                    .build()
            )
        );
        final Collection<ResourcePrivileges> app2 = response.getDetails().application().get("app2");
        assertThat(app2, Matchers.iterableWithSize(4));
        assertThat(
            Strings.collectionToCommaDelimitedString(app2),
            app2,
            containsInAnyOrder(
                ResourcePrivileges.builder("foo/1")
                    .addPrivileges(
                        MapBuilder.newMapBuilder(new LinkedHashMap<String, Boolean>())
                            .put("read", false)
                            .put("write", false)
                            .put("all", false)
                            .map()
                    )
                    .build(),
                ResourcePrivileges.builder("foo/bar/2")
                    .addPrivileges(
                        MapBuilder.newMapBuilder(new LinkedHashMap<String, Boolean>())