Install docker python module with pip
Install docker python module with pip

The docker-py python module is now called docker and has an
incompatible api. Running latest kolla-ansible with docker-py
will throw an error like this:
AttributeError: 'module' object has no attribute 'APIClient'

Change-Id: Idd10735c764717cf711f62b3243d39d8c8ed263f

dardelean/kolla-ansible,dardelean/kolla-ansible,dardelean/kolla-ansible