Fix for Ansible 2.1: install docker-py in version matched to ansible docker module
Fix for Ansible 2.1: install docker-py in version matched to ansible docker module

Signed-off-by: KGoreczny <bca45ba603c23ac31324cebb947c1618bf6167d4@intel.com>

ceph/ansible-ceph-mon,staticfork/ansible-ceph-mon