First take on integration test for using on devstack
First take on integration test for using on devstack

Change-Id: Ie9a3f7b6ac9b3560c4d001739cae4a3b65176abf
Implements: blueprint devstack-plugin

openstack/ironic-inspector,rdo-management/ironic-discoverd,rdo-management/ironic-discoverd,openstack/ironic-inspector