Restore domains with a different uuid than they had.

Needed for migration to localhost and migration between hosts with
a shared/distributed xenstore.
Signed-off-by: Christian Limpach <Christian.Limpach@cl.cam.ac.uk>

tools/python/xen/xend/XendDomain.py

@@ -320,8 +320,7 @@ class XendDomain:
         @param vmconfig: vm configuration
         """
         config = sxp.child_value(vmconfig, 'config')
-        uuid = sxp.child_value(vmconfig, 'uuid')
-        dominfo = XendDomainInfo.restore(self.dbmap, config, uuid=uuid)
+        dominfo = XendDomainInfo.restore(self.dbmap, config)
         return dominfo
 
     def domain_restore(self, src, progress=False):

tools/python/xen/xend/XendDomainInfo.py

@@ -195,13 +195,15 @@ class XendDomainInfo:
 
     recreate = classmethod(recreate)
 
-    def restore(cls, parentdb, config, uuid):
+    def restore(cls, parentdb, config, uuid=None):
         """Create a domain and a VM object to do a restore.
 
         @param parentdb:  parent db
         @param config:    domain configuration
         @param uuid:      uuid to use
         """
+        if not uuid:
+            uuid = getUuid()
         db = parentdb.addChild(uuid)
         vm = cls(db)
         ssidref = int(sxp.child_value(config, 'ssidref'))