Feat/monitor task (#11116)

### What problem does this PR solve?

Show task executor.

### Type of change

- [x] New Feature (non-breaking change which adds functionality)

admin/server/services.py

@@ -192,6 +192,10 @@ class ServiceMgr:
                     config_dict['status'] = 'timeout'
             except Exception:
                 config_dict['status'] = 'timeout'
+            if not config_dict['host']:
+                config_dict['host'] = '-'
+            if not config_dict['port']:
+                config_dict['port'] = '-'
             result.append(config_dict)
         return result