Add post deploy actions
* update /etc/hosts for all nodes in cluster;
* restart radosgw for all controllers.

Change-Id: I44fe35cb3e6adf19e0ba3bdc266798c2666c4a62
Closes-Bug: #1272841
Closes-Bug: #1261966
Closes-Bug: #1275999
Ignore inaccessible nodes when try to stop a deploy

Change-Id: I26854c24acffa1f56d6f5fb9c361ff77d000617e
Related-Bug: #1283812
Merge "Ignore inaccessible nodes when try to stop a deploy"
Escape credentials for cirros image upload

Special characters could cause cirros image
upload to fail. Shellquote.escape will ensure
the password passed is valid.
Also fixes typo in cirros image upload failure

Change-Id: I3773385d05e91c87ddf56c251203f6a2068b1c16
Closes-Bug: #1285318
Draft provision stop

Change-Id: Ibcd588fc3dae5961ea51239cad6f2bdee5f16bbf
alfa version of provision stop

Change-Id: I7878ad872fed1596c38e11f64ae1bbc681c8de1c