core: notify xenstored about domain resume

Otherwise it will not fire further domain suspend/death watches against
this domain - so xl will not cleanup the domain.

core-modules/000QubesVm.py

@@ -1655,6 +1655,7 @@ class QubesVm(object):
         if xc_info['shutdown_reason'] == 2:
             # suspended
             xc.domain_resume(xc_info['domid'], 1)
+            xs.resume_domain(xc_info['domid'])
         else:
             self.unpause()