[xapi] clean up xenopsd VMs marked as "Suspended" on restart
[xapi] clean up xenopsd VMs marked as "Suspended" on restart

Normally a xapi suspend or migrate will clean up these xenopsd VMs inline
but a badly-timed xapi restart can leave them lying around. Therefore
on_xapi_restart will perform a xenopsd VM.shutdown and VM.remove on any
Suspended Vms it finds.

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

djs55/squeezed,koushikcgit/xcp-networkd,johnelse/xcp-rrdd,djs55/xcp-networkd,koushikcgit/xcp-rrdd,simonjbeaumont/xcp-rrdd,robhoes/squeezed,djs55/xcp-networkd,djs55/xcp-rrdd,johnelse/xcp-rrdd,sharady/xcp-networkd,koushikcgit/xcp-networkd,koushikcgit/xcp-rrdd,sharady/xcp-networkd,djs55/xcp-rrdd,simonjbeaumont/xcp-rrdd,koushikcgit/xcp-rrdd