The deployment host documentation gets out of date really quickly.
This patch makes it self maintaining. Note that due to the fact
that RDO/SUSE do not implement their repositories for a new
release until much, much later in the cycle, we use the previous
release repo for master. This will self-update during our RC
when the stable branch is cut.
Some formatting adjustments have made to prevent the interpretation
of URL's as links by sphinx and to remove the use of multi-line shell
commands.
Closes-Bug: #1759721
Change-Id: Id28540d335390a52e0eb65a734a1d594235265d6
ca49f4121e