Fallback if git is absent
Fallback if git is absent

When building packages if git is absent, then we should
fall back to a safe default.

Closes-Bug: #1552251
Change-Id: Ife309625a380cf7d5cc42581ed6d8f9f72b86cd9

jimbobhickville/taskflow,openstack/taskflow,jimbobhickville/taskflow,openstack/taskflow