Many tasks that use Docker have become specified already, but
not all. This change ensures all tasks that use the following
modules have become:

* kolla_docker
* kolla_ceph_keyring
* kolla_toolbox
* kolla_container_facts

It also adds become for 'command' tasks that use docker CLI.

Change-Id: I4a5ebcedaccb9261dbc958ec67e8077d7980e496

TrivialFix

Change-Id: I3ad67fd802f7fe3ed7deb88eddebe520ff410a4f

Added new script for checking user permissions on
docker command execution

Change-Id: I3b727590d9a29f416f5b847912b7250c555c2333
Closes-Bug: #1473554