Objects versions new style config
Objects versions new style config

allow_versions is going to be a deprecated option.
Setting up the object versining in the new way.

[1] http://docs.openstack.org/developer/swift/overview_object_versioning.html

Change-Id: Ia520fbb6eb535b08ce83c0cb4bea31e7bba55eb3

richliu/devstack,bswartz/devstack,group-policy/devstack,openstack-dev/devstack,nawawi/openstack,nawawi/openstack,dtroyer/devstack,openstack-dev/devstack,richliu/devstack,bswartz/devstack,noironetworks/devstack,dtroyer/devstack,group-policy/devstack,noironetworks/devstack