Re-add designate to pike projects
Re-add designate to pike projects

All the guides seem to be in place by now. Also add install guide.

Change-Id: I8153abf958c31d99fc4c57a5030ca1f1e6ce02ae

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