Externalize the debian packages.

playbooks/roles/rabbitmq/tasks/main.yml

@@ -7,7 +7,7 @@
   apt_key: url={{rabbitmq_apt_key}} state=present
 
 - name: install python-software-properties if debian
-  apt: pkg='python-software-properties' state=present
+  apt: pkg={{",".join(rabbitmq_debian_pkgs)}} state=present
   when: ansible_distribution == 'Debian'
 
 - name: add rabbit repository

playbooks/roles/rabbitmq/vars/main.yml

@@ -3,6 +3,8 @@
 rabbitmq_apt_key: "http://www.rabbitmq.com/rabbitmq-signing-key-public.asc"
 rabbitmq_repository: "deb http://www.rabbitmq.com/debian/ testing main"
 rabbitmq_pkg: "rabbitmq-server"
+rabbitmq_debian_pkgs:
+  - python-software-properties
 
 rabbitmq_config_dir: "/etc/rabbitmq"
 rabbitmq_cookie_dir: "/var/lib/rabbitmq"