Added get_this_vm_uuid

Change-Id: I9dd8ec237309da82ec7f73db1acb48e5b7411c9e
temporary commit

Change-Id: Id32f724b650b29c42156deb55e1666d4f44c3a3c
temporary commit

Change-Id: Ic7c4ecb81ce12270ebef5310a7970d4b8b64b6d6
Added XenAPI operations

Change-Id: Ie34fda88b2534ad43db16389d18efa98e4e0649e
Added volume_attached_here

Change-Id: I68bbe2047b896dcb56c7bea68044920f82c05a0c