* Separate OSTYPE specific tasks/files.
* Keep only common tasks and files in the
playbooks dir.
TODO pxe case to be working for centos as well
note, the cmtools.sh installs ansible 2.0.1.0
in centos7, while we have 2.0.0.2 for ubuntu trusty
note, the base.yaml installs python-keystoneclient
1:1.3.0-1.el7 from kilo-2 (no juno for centos7),
while for ubuntu we have one from juno
note, there is no pygraphviz for centos7, see also
https://bugs.launchpad.net/fuel/+bug/1510884
Closes-bug: #1548851
Change-Id: Icec5637f9242104322d1104725f9f132d1ca16f0
Signed-off-by: Bogdan Dobrelya <bdobrelia@mirantis.com>