- Display services and daemons in the cluster/services page.
- Display daemons in the cluster/hosts/host-detail page (Daemons tab).

This PR also partially addresses https://tracker.ceph.com/issues/43165:
The endpoint `/api/orchestrator/service` is removed.

Create new endpoints:
  - `/api/service`: listing all services in the Ceph cluster.
  - `/api/service/<service_name>/daemons`: listing daemons for a
    service. e.g. daemons of OSD.
  - `/api/host/<hostname>/daemons`: listing daemons of a host.

Fixes: https://tracker.ceph.com/issues/44221

Signed-off-by: Kiefer Chang <kiefer.chang@suse.com>

- Refactor list_daemons: return ceph-xxx processes on host.
- Refactor describe_service: return services by grouping ceph-xxx
  processes on host.
- Add dummy data.

Signed-off-by: Kiefer Chang <kiefer.chang@suse.com>

The ps output names daemons like 'type.foo', e.g., 'mgr.x'.  Now that
the test_orchestrator impl is less bonkers this needs to be adjusted to
match reality.

Signed-off-by: Sage Weil <sage@redhat.com>