mgr/cephadm: adding the SSL cert as a dependency for rgw service

this way when the user changes the SSL certificate in the spec and
performs an 'orch apply' cephadm will detect the change and
reconfigure the rgw service automatically

Fixes: https://tracker.ceph.com/issues/69863

Signed-off-by: Redouane Kachach <[email protected]>

Author: rkachach

src/pybind/mgr/cephadm/services/cephadmservice.py

@@ -996,6 +996,21 @@ class RgwService(CephService):
     def allow_colo(self) -> bool:
         return True
 
+    @classmethod
+    def get_dependencies(cls, mgr: "CephadmOrchestrator",
+                         spec: Optional[ServiceSpec] = None,
+                         daemon_type: Optional[str] = None) -> List[str]:
+
+        deps = []
+        rgw_spec = cast(RGWSpec, spec)
+        ssl_cert = getattr(rgw_spec, 'rgw_frontend_ssl_certificate', None)
+        if ssl_cert:
+            if isinstance(ssl_cert, list):
+                ssl_cert = '\n'.join(ssl_cert)
+            deps.append(f'ssl-cert:{str(utils.md5_hash(ssl_cert))}')
+
+        return sorted(deps)
+
     def set_realm_zg_zone(self, spec: RGWSpec) -> None:
         assert self.TYPE == spec.service_type