show install guides in order by service description, like we do elsewhere
show install guides in order by service description, like we do elsewhere

Change-Id: Ia672f0fb6700d7983f88c862d9e82332f131d43b
Signed-off-by: Doug Hellmann <0798ebecfb7bc4dfb9d0445c2fa030eb64e1fa1c@doughellmann.com>

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals