Update openstack.rst
Update openstack.rst

Rogue full-stop causing DCL bullet style catastrophe.
anortef/calico,neiljerram/felix,matthewdupre/felix,alexhersh/calico,ocadotechnology/calico,nbartos/calico,ocadotechnology/calico,nbartos/calico,kasisnu/calico,Metaswitch/calico,TrimBiggs/calico,kasisnu/calico,Metaswitch/calico,matthewdupre/felix,anortef/calico,alexhersh/calico,neiljerram/felix,beddari/calico,beddari/calico,neiljerram/felix,TrimBiggs/calico,neiljerram/felix