vlan: Modify create method to return an ObjectPath

This will be nice to have for ipmid so that it can easily figure out the
path of the new vlan object when it creates one.

Change-Id: I6b93c5e64499c0cb9e36e8354eda6089bfd6d6c9
Signed-off-by: William A. Kennington III <wak@google.com>
5 files changed