Two tasks for initializing group names for the byo playbooks was located
in the common folder in the std_include.yml file.  Byo dependencies
should not be in the common folder.  The two tasks have been removed
from common/openshift-cluster/std_include.yml to a new file
byo/openshift-cluster/initialize_groups.yml.  All references where these
tasks were included from either std_include.yml or other various files
have been updated to use the byo initialize_groups.yml.  The methodology
implemented follows the pattern of having groups set up in byo then
calling out to playbooks in common, which are common to all deployments.

The playbooks were crossing byo/common boundaries for task includes.
This moves all 'common' files/tasks into the 'common' folder.

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.

Correct usage of draining nodes