Don't exit when encountering exception from Domain.create_new
Don't exit when encountering exception from Domain.create_new

Signed-off-by: Si Beaumont <a0992b7f1f450b4c7716d34b81a2d6f0877ae11a@citrix.com>

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