Fix devstack and CI breakage.

playbooks/roles/discern/tasks/deploy.yml

@@ -9,7 +9,7 @@
 
 - name: enable supervisor scripts - discern, discern_celery
   file: >
-    dest={{ supervisor_available_dir }}/{{ item }}.conf
+    src={{ supervisor_available_dir }}/{{ item }}.conf
     dest={{ supervisor_cfg_dir }}/{{ item }}.conf
     owner={{ supervisor_user }}
     state=link

playbooks/vagrant-devstack.yml

@@ -16,6 +16,7 @@
   roles:
     - edx_ansible
     - edxlocal
+    - supervisor
     - mongo
     - edxapp
     - oraclejdk