This brings Kolla images inline with FHS and should make finding
locations of things more consistent and reliable with the linux world
at large.
Change-Id: Iece5b4da4bace0fb8b1f41a65ab2c852ec73e6f8
Closes-Bug: #1485742
Updated build.py to reflect this change.
Deprecate --template option and make it a noop.
Change-Id: I7cd98d1ee684a4c64984a49597159868152683b2
Partially-Implements: blueprint remove-docker-dir