xenlight: Create the /vm/<uuid>/domains/0 entry for domain 0
xenlight: Create the /vm/<uuid>/domains/0 entry for domain 0

Otherwise the backend cannot figure out the relevant domain id given
a uuid, causing a failure to find a storage driver domain (ie domain 0)

Signed-off-by: David Scott <63c9eb0ea83039690fefa11afe17873ba8278a56@eu.citrix.com>

euanh/xenopsd,cheng--zhang/xenopsd,cheng--zhang/xenopsd,djs55/xenopsd,djs55/xenopsd,johnelse/xenopsd,simonjbeaumont/xenopsd,djs55/xenopsd-previous,thomassa/xenopsd,simonjbeaumont/xenopsd,djs55/xenopsd-previous,djs55/xenopsd-previous,koushikcgit/xenopsd,euanh/xenopsd,cheng--zhang/xenopsd,johnelse/xenopsd,koushikcgit/xenopsd,koushikcgit/xenopsd,thomassa/xenopsd,simonjbeaumont/xenopsd,euanh/xenopsd,johnelse/xenopsd,thomassa/xenopsd,djs55/xenopsd