[vrobbler] Update run time settings

lab/ansible/roles/vrobbler/files/immortal-vrobbler.yml

@@ -1,4 +1,4 @@
-cmd: gunicorn --bind 0.0.0.0:8014 vrobbler.wsgi:application
+cmd: gunicorn --bind 0.0.0.0:8014 -w 1 --timeout 1000 --threads 4 vrobbler.wsgi:application
 log:
     file: /var/log/vrobbler.log
     age: 86400 # log 1 day