Fix ckan-worker crash by running as root user

The ckan-worker supervisor process was configured to run as user=ckan,
but Azure PostgreSQL requires SSL and psycopg2 looks for a client cert
at /root/.postgresql/postgresql.crt which the ckan user cannot access.
This matches all other supervisor processes which already run as root.

Author: cooper667

ckan/ckan_supervisor.conf

@@ -67,7 +67,7 @@ command=%(ENV_CKAN_VENV)s/bin/ckan -c %(ENV_CONFIG)s jobs worker
 
 
 ; User the worker runs as.
-user=ckan
+user=root
 
 
 ; Start just a single worker. Increase this number if you have many or