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
private static final String READ_CROSS_CLUSTER_NAME = "internal:transport/proxy/indices:data/read/query";
    public void testIsReserved() {
        assertThat(ReservedRolesStore.isReserved("kibana_system"), is(true));
        assertThat(ReservedRolesStore.isReserved("superuser"), is(true));
        assertThat(ReservedRolesStore.isReserved("foobar"), is(false));