fix dependencies

- kombu relies on deprecated importlib metadata,
celery/kombu#1601
- pass along qualifier to apphub when set

omegaml/client/cli/runtime.py

@@ -412,13 +412,15 @@ def restart(self):
         name = self.args.get('<name>')
         insecure = self.args.get('--insecure', False)
         user = om.runtime.auth.userid
+        qualifier = om.runtime.auth.qualifier
         auth = requests.auth.HTTPBasicAuth(user, om.runtime.auth.apikey)
+        headers = {'Qualifier': qualifier}
         parsed = urlparse(om.defaults.OMEGA_MONGO_URL)
         url = f'https://{parsed.hostname}'
         stop = requests.get(f'{url}/apps/api/stop/{user}/{name}'.format(om.runtime.auth.userid),
-                            auth=auth, verify=not insecure)
+                            auth=auth, verify=not insecure, headers=headers)
         start = requests.get(f'{url}/apps/api/start/{user}/{name}'.format(om.runtime.auth.userid),
-                             auth=auth, verify=not insecure)
+                             auth=auth, verify=not insecure, headers=headers)
         self.logger.info(f'stop: {stop} start: {start}')
 
     def serve(self):

setup.py

@@ -80,6 +80,7 @@
     ],
     install_requires=[
         'celery>4.4,<5.0',
+        'importlib-metadata<5.0', # due to https://github.com/celery/kombu/pull/1601
         'joblib>=0.9.4',
         'jupyter-client>=4.1.1',
         'mongoengine~=0.24.1',