Do not use bare variables in with_items

this is deprecated and seems not already possible in Ansible 2.2

Change-Id: Id389e764b8cb7705dc9a1fcbe825e6829caace24

playbooks/roles/bifrost-create-vm-nodes/tasks/main.yml

@@ -62,7 +62,7 @@
 
 - name: "Install required packages"
   action: "{{ ansible_pkg_mgr }} name={{ item }} state=present"
-  with_items: required_packages
+  with_items: "{{ required_packages }}"
 
 - name: "Restart libvirt service"
   service: name="{{libvirt_service_name}}" state=restarted

playbooks/roles/bifrost-ironic-install/tasks/install.yml

@@ -18,7 +18,7 @@
   when: ansible_os_family == 'Debian'
 - name: "Install packages"
   action: "{{ ansible_pkg_mgr }} name={{ item }} state=present"
-  with_items: required_packages
+  with_items: "{{ required_packages }}"
 # Step required for Ubuntu 14.10
 - name: "Install Ubuntu 14.10 (and later) packages"
   action: "{{ ansible_pkg_mgr }} name={{ item }} state=present"

playbooks/roles/bifrost-keystone-install/tasks/install.yml

@@ -13,7 +13,7 @@
 ---
 - name: "Install packages"
   action: "{{ ansible_pkg_mgr }} name={{ item }} state=present"
-  with_items: required_packages
+  with_items: "{{ required_packages }}"
 
 - name: "If VENV is set in the environment, enable installation into venv"
   set_fact: