Fix: various documentation and URL fixes

1) UCP -> Airship
2) readthedocs.org -> readthedocs.io (there is redirect)
3) http -> https
4) attcomdev -> airshipit (repo on quay.io)
5) att-comdev -> openstack/airship-* (repo on github/openstack git)
6) many URLs have been verified and adjusted to be current
7) no need for 'en/latest/' path in URL of the RTD
8) added more info to some setup.cfg and setup.py files
9) ucp-integration docs are now in airship-in-a-bottle
10) various other minor fixes

Change-Id: Iae7a867c71d6e61d8d1dcd99133a6e74fef7de2a

setup.cfg

@@ -2,9 +2,9 @@
 name = Berth
 summary = A deliberately minimalist VM runner for Kubernetes.
 description-file = README.rst
+author = The Airship Authors
+home-page = https://airship-berth.readthedocs.io/
 
-author = Berth Authors
-home-page = http://berth.readthedocs.io/en/latest/
 classifier =
     Intended Audience :: Information Technology
     Intended Audience :: System Administrators