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] https://github.com/ansible/ansible-modules-core/issues/1497

Also:
- add license boilerplate to meta file

Change-Id: I8ce52d62acc900d1c45e57ef42e5a2e11fd1db9b

meta/main.yml

@@ -1,10 +1,24 @@
 ---
+# Copyright 2017, Rackspace US, Inc.
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#     http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
 galaxy_info:
   author: OpenStack-Ansible
   description: Deploy Magnum with OpenStack Ansible
   company: OpenStack
   license: Apache-2.0
-  min_ansible_version: 2.0
+  min_ansible_version: 2.2
   version: 0.1.0
   platforms:
   - name: Ubuntu

tasks/magnum_install.yml

@@ -13,9 +13,16 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
-- include: magnum_install_apt.yml
-  static: no
-  when: ansible_pkg_mgr == 'apt'
+- name: Install distro packages
+  package:
+    name: "{{ magnum_distro_packages }}"
+    state: "{{ magnum_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:

tasks/magnum_install_apt.yml

@@ -1,26 +0,0 @@
----
-# Copyright 2016, Walmart Stores, Inc.
-#
-# Licensed under the Apache License, Version 2.0 (the "License");
-# you may not use this file except in compliance with the License.
-# You may obtain a copy of the License at
-#
-#     http://www.apache.org/licenses/LICENSE-2.0
-#
-# Unless required by applicable law or agreed to in writing, software
-# distributed under the License is distributed on an "AS IS" BASIS,
-# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-# See the License for the specific language governing permissions and
-# limitations under the License.
-
-- name: Install apt packages for Magnum
-  apt:
-    pkg: "{{ item }}"
-    state: "{{ magnum_package_state }}"
-    update_cache: yes
-    cache_valid_time: "{{ cache_timeout }}"
-  register: install_magnum_distro_packages
-  until: install_magnum_distro_packages |success
-  retries: 5
-  delay: 2
-  with_items: "{{ magnum_distro_packages }}"