Fix radosgw 'rgw frontends' param
Fix radosgw 'rgw frontends' param

Fix 'rgw frontends' param on ceph-rgw container.
After apply this patch the service starts
http://paste.openstack.org/show/495786/

Closes-Bug: #1576817
Change-Id: I434ca2a72c035f457bd50ef5de20e62f89974e0c

stackforge/kolla,nihilifer/kolla,mandre/kolla,dardelean/kolla-ansible,coolsvap/kolla,coolsvap/kolla,tonyli71/kolla,nihilifer/kolla,stackforge/kolla,openstack/kolla,mrangana/kolla,intel-onp/kolla,mrangana/kolla,dardelean/kolla-ansible,rahulunair/kolla,GalenMa/kolla,intel-onp/kolla,stackforge/kolla,mandre/kolla,coolsvap/kolla,dardelean/kolla-ansible,tonyli71/kolla,rahulunair/kolla,GalenMa/kolla,openstack/kolla,mandre/kolla