Use package module to install distro packages

Consolidate distro package install tasks into a
single task using the package module and pass
the package list into the name instead of using
a with_items loop.

The minimum Ansible version is raised to 2.2 due to a
known bug [1] in Ansible's apt module which does not
update the cache properly if the cache update and the
install are combined in a single task.

[1] ansible/ansible-modules-core#1497

Change-Id: I5d87e5e5d11bd1dcffb6a6187733f6d8e4e72fbf

meta/main.yml

@@ -23,7 +23,7 @@ galaxy_info:
   description: "Openstack Monasca"
   company: "Internet Solutions"
   license: "license (Apache)"
-  min_ansible_install: 1.9
+  min_ansible_install: 2.2
   platforms:
     - name: Ubuntu
       versions:

tasks/install.yml

@@ -16,9 +16,16 @@
 # (c) 2016 Donovan Francesco <donovan.francesco@is.co.za>
 # (c) 2016 Paul Stevens <paul.stevens@is.co.za>
 
-- include: monasca_install_apt.yml
-  static: no
-  when: ansible_pkg_mgr == 'apt'
+- name: Install distro packages
+  package:
+    name: "{{ monasca_distro_packages }}"
+    state: "{{ monasca_package_state }}"
+    update_cache: "{{ (ansible_pkg_mgr == 'apt') | ternary('yes', omit) }}"
+    cache_valid_time: "{{ (ansible_pkg_mgr == 'apt') | ternary(cache_timeout, omit) }}"
+  register: install_packages
+  until: install_packages | success
+  retries: 5
+  delay: 2
 
 - name: Create developer mode constraint file
   copy: