This patch includes the following changes to enable OpenStack-CI gate
testing and to allow the role to pass a basic convergence test:
- Base configuration for OpenStack's CI Infrastructure.
- Base documentation build configuration.
- A Vagrantfile for local testing.
- A base test configuration in order to execute the standard tests.
- Added a CONTRIBUTING file.
- Add reno scaffolding for release notes management.
- Correcting name of handler to restart services in install tasks.
- Define ``cloudkitty_galera_password`` and
``cloudkitty_user_password`` in test variables.
- Define default ``debug`` and ``cloudkitty_service_region`` variables.
Change-Id: I7bcc8c589d506d8b71eb08fc87861a4c31a6e947