Merge the notifications and cleaning workers

The notifications queue is used very rarely (and not at all in the OSS
version), so it doesn't make sense to keep a dedicated worker just for it.
Combining the two workers in the utils container saves memory and startup
time.

supervisord/utils.conf

@@ -26,19 +26,10 @@ environment=VECTOR_EVENT_HANDLER="SynchronousLogstashHandler"
 numprocs=1
 autorestart=true
 
-[program:rqworker-notifications]
+[program:rqworker]
 command=%(ENV_HOME)s/wait_for_deps.sh
-    python3 %(ENV_HOME)s/manage.py rqworker -v 3 notifications
+    python3 %(ENV_HOME)s/manage.py rqworker -v 3 notifications cleaning
         --worker-class cvat.rqworker.DefaultWorker
-environment=VECTOR_EVENT_HANDLER="SynchronousLogstashHandler",CVAT_POSTGRES_APPLICATION_NAME="cvat:worker:notifications"
+environment=VECTOR_EVENT_HANDLER="SynchronousLogstashHandler",CVAT_POSTGRES_APPLICATION_NAME="cvat:worker:notifications+cleaning"
 numprocs=%(ENV_NUMPROCS)s
 autorestart=true
-
-[program:rqworker-cleaning]
-command=%(ENV_HOME)s/wait_for_deps.sh
-    python3 %(ENV_HOME)s/manage.py rqworker -v 3 cleaning
-        --worker-class cvat.rqworker.DefaultWorker
-environment=VECTOR_EVENT_HANDLER="SynchronousLogstashHandler",CVAT_POSTGRES_APPLICATION_NAME="cvat:worker:cleaning"
-numprocs=%(ENV_NUMPROCS)s
-process_name=%(program_name)s-%(process_num)d
-autorestart=true