In openshift_repos and everywhere, ensure deployment_type and
openshift_deployment_type are defined and the same.
We really want to set openshift_deployment_type, but users will likely
still have just deployment_type, so accept both. And don't make every
playbook default openshift_deployment_type to deployment_type.

This introduces the openshift_sanitize_inventory role to run before anything else.

* Added checks to make ci for yaml linting
* Modified y(a)ml files to pass lint checks

- Rename repos role to openshift_repos
  - Make openshift_repos a dependency of openshift_common
  - Add README and metadata for openshift_repos
  - Playbook updates for role rename
- Verify libselinux-python is installed, otherwise some of the bulit-in
  modules we use fail