Add anisble-galaxy configuration with timezone setup in common

ref:
- https://docs.ansible.com/galaxy.html
- https://servercheck.in/blog/using-ansible-galaxy
- https://github.com/yatesr/ansible-timezone

.travis.yml

@@ -1,14 +1,23 @@
 ---
 language: python
 python: "2.7"
-
-before_install:
-  # Make sure everything's up to date.
-  - sudo apt-get update -qq
+sudo: true
 
 install:
   # Install Ansible.
-  - pip install ansible
+  - sudo pip install ansible
+  - sudo ansible-galaxy install -r requirements.yml
 
 script:
+  # Check the role/playbook's syntax.
   - ansible-playbook -i hosts playbook.yml --syntax-check
+
+  # Run the role/playbook with ansible-playbook.
+  - "ansible-playbook -i hosts playbook.yml --connection=local --sudo -vvvv"
+
+  # Run the role/playbook again, checking to make sure it's idempotent.
+  - >
+  ansible-playbook -i tests/inventory tests/test.yml --connection=local --sudo
+  | grep -q 'changed=0.*failed=0'
+  && (echo 'Idempotence test: pass' && exit 0)
+  || (echo 'Idempotence test: fail' && exit 1)

README.md

@@ -17,6 +17,7 @@ Make sure you have [vagrant] and virtualbox installed, then run:
 
 ```shell
 sudo pip install ansible
+sudo ansible-galaxy install -r requirements.yml
 vagrant up
 ```
 
@@ -26,6 +27,11 @@ Login to the new machine with:
 vagrant ssh
 ```
 
+### Further Reading
+
+1. https://docs.ansible.com/galaxy.html
+
+
 [vagrant]: https://www.vagrantup.com/downloads.html
 
 ## Contributing

playbook.yml

@@ -1,7 +1,6 @@
 ---
 - hosts: all
   sudo: true
-  gather_facts: false
 
   roles:
   - common

requirements.yml

@@ -0,0 +1,4 @@
+# https://docs.ansible.com/galaxy.html#advanced-control-over-role-requirements-files
+
+# https://github.com/yatesr/ansible-timezone
+- src: yatesr.timezone

roles/common/meta/main.yml

@@ -0,0 +1,3 @@
+---
+dependencies:
+  - { role: yatesr.timezone, timezone: Asia/Kolkata }

roles/common/tasks/main.yml

@@ -1,4 +1,4 @@
 ---
 # roles/common/tasks/main.yml
-- name: set system locale
+- name: Set system locale
   command: update-locale LC_ALL={{ lc_all }} LANG={{ lang }} LC_CTYPE={{ lc_ctype }} LC_COLLATE={{ lc_collate }}