update openstack documentation
update openstack documentation

robinpercy/kops,robinpercy/kops,gambol99/kops,robinpercy/kops,kubernetes/kops,aledbf/kops,justinsb/kops,aledbf/kops,gambol99/kops,aledbf/kops,justinsb/kops,robinpercy/kops,aledbf/kops,justinsb/kops,gambol99/kops,gambol99/kops,kubernetes/kops,kubernetes/kops