Add obviously-missing method that prevents an Hyper-V compute node from even

starting up

nova/virt/hyperv.py

@@ -485,3 +485,7 @@ class HyperVConnection(driver.ComputeDriver):
 
     def poll_rescued_instances(self, timeout):
         pass
+
+    def update_available_resource(self, ctxt, host):
+        """This method is supported only by libvirt."""
+        return