Rebase on LogicalUnit.name @property setter
Rebase on LogicalUnit.name @property setter

Recent pypowervm commit 5f4e66ff1a7c6b335b881dcf8daac7414abc1f3a exposed
the private _name method of LogicalUnit as a public @property setter.
Rebase on the change.

Change-Id: I8065aeea33d95189bcc2df74dd882cb98605ba5c

openstack/nova-powervm,stackforge/nova-powervm,openstack/nova-powervm,stackforge/nova-powervm