Add internal updates back into xenlight backend
Add internal updates back into xenlight backend

Signed-off-by: Jon Ludlam <e7e3380887a8f95cc9dc4f0d51dedc7e849a287a@citrix.com>

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