Add openstack-ansible-plugins as a collection
Add openstack-ansible-plugins as a collection

This collection contains utilities used across many other roles in
openstack-ansible, initially for database, message queue and service
setup.

Depends-On: Ice2dbac8a2b23e33523e9b6f120f8f16588b43e1
Change-Id: I8c2e9394dc51d0930b2c340afd0b28fde86a966b

openstack/openstack-ansible,stackforge/os-ansible-deployment,openstack/openstack-ansible,stackforge/os-ansible-deployment