force killing rabbit processes, new play for restarting supervisor

playbooks/edx-east/restart_supervisor.yml

+- name: restarts supervisor
+  hosts: all
+  sudo: True
+  gather_facts: False
+  var_files:
+    - common/defaults/main.yml
+    - supervisor/defaults/main.yml
+  tasks:
+    - name: supervisor | restart supervisor
+      service: >
+        name={{ supervisor_service }}
+        state=restarted

playbooks/roles/rabbitmq/tasks/main.yml

@@ -18,6 +18,9 @@
 - name: rabbitmq | stop rabbit cluster
   service: name=rabbitmq-server state=stopped
 
+- name: rabbitmq | send sigterm to any running rabbitmq processes
+  shell: killall beam rabbitmq-server epmd
+
 # Defaulting to /var/lib/rabbitmq
 - name: rabbitmq | create cookie directory
   file: >