IBM XIV: Fix ordered use of a dict
IBM XIV: Fix ordered use of a dict

When hash randomization is enabled, this code fails unit tests,
because names are generated in assorted orders.

Sort the dict keys to always generate the same names.

Change-Id: Icdde5e3f213adfe4893d1b9e8f2bfe4f61704037

mahak/cinder,Datera/cinder,j-griffith/cinder,j-griffith/cinder,eharney/cinder,phenoxim/cinder,eharney/cinder,mahak/cinder,openstack/cinder,phenoxim/cinder,Datera/cinder,openstack/cinder