Rename the cloud_archive task to uca/rdo tasks for ubuntu/centos
Rename the worker_upstrart task to the worker
Rework the OSTYPE env var to "when: ansible_os_family"
TODO
* PXE (PREPROVISIONED=false) to be working for centos as well
* pygraphviz for centos7, see also https://bugs.launchpad.net/fuel/+bug/1510884
* fix ubuntu only compatible examples, for example riak cluster deploy
Closes-bug: 1553988
Change-Id: Iab130c3c79b3db99deb14ea50572c073532f4694
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>
542a359af2