mgr/cephadm: fixing oauth_proxy pre_remove action

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

Author: rkachach

src/pybind/mgr/cephadm/services/oauth2_proxy.py

@@ -88,3 +88,11 @@ def generate_config(self, daemon_spec: CephadmDaemonDeploySpec) -> Tuple[Dict[st
         }
 
         return daemon_config, []
+
+    def pre_remove(self, daemon: DaemonDescription) -> None:
+        """
+        Called before mgmt-gateway daemon is removed.
+        """
+        # delete cert/key entires for this mgmt-gateway daemon
+        self.mgr.cert_mgr.rm_cert('oauth2_proxy_cert')
+        self.mgr.cert_mgr.rm_key('oauth2_proxy_key')