Purge Fedora getting started of old info

Remove all of the old tools/openstack related info from
the on_fedora docs - the best source of documentation for
Fedora is now the RDO docs (for Heat RPM package installs),
or the on_devstack guide for development installs.

Change-Id: Id33d94cc063361698eb87315a56ef7f720ecaa73
Partial-Bug: #1182428
Merge "Purge Fedora getting started of old info"