### Elasticsearch Version

8.0

The built-in `remote_monitoring_user` has [remote_monitoring_agent, remote_monitoring_collector] roles, which can't perform a rollover on metricbeat indices.

`
[org.elasticsearch.xpack.ilm.IndexLifecycleRunner] [instance-0000000001] policy [metricbeat] for index [metricbeat-7.15.2-2022.01.24-000001] failed on step [{"phase":"hot","action":"rollover","name":"check-rollover-ready"}]. Moving to ERROR step
org.elasticsearch.ElasticsearchSecurityException: action [indices:admin/rollover] is unauthorized for user [remote_monitoring_user] with roles [remote_monitoring_agent,remote_monitoring_collector] on indices [metricbeat-7.15.2,metricbeat-7.15.2-2022.01.24-000001], this action is granted by the index privileges [manage_follow_index,manage,all]
`
x-pack/plugin/core/src/main/java/org/elasticsearch/xpack/core/security/authz/store/ReservedRolesStore.java
}
    public static boolean isReserved(String role) {
        return RESERVED_ROLES.containsKey(role);
    }
    public Map<String, Object> usageStats() {
        return Collections.emptyMap();
    }
    public RoleDescriptor roleDescriptor(String role) {
        return RESERVED_ROLES.get(role);
    }
    public Collection<RoleDescriptor> roleDescriptors() {
        return RESERVED_ROLES.values();
    }
    public static Set<String> names() {
        return RESERVED_ROLES.keySet();
    }
    @Override
    public void accept(Set<String> roleNames, ActionListener<RoleRetrievalResult> listener) {
        final Set<RoleDescriptor> descriptors = roleNames.stream()
            .map(RESERVED_ROLES::get)
            .filter(Objects::nonNull)
            .collect(Collectors.toSet());
        listener.onResponse(RoleRetrievalResult.success(descriptors));
    }
    @Override
    public String toString() {
        return "reserved roles store";
    }
}