Add doc, etc and cloud-init-templates directories to python egg
Add doc, etc and cloud-init-templates directories to python egg

For upstream packaging system it's required to have all
files which are required for package build in tarball.

Change-Id: Ia35bfb54a528b14804a7c447ddd9e4eb77959c81
Closes-bug: #1571669

openstack/bareon,openstack/bareon