rrdd.py: Python3: Fix crash on failure contacting xcp-rrdd

Signed-off-by: Bernhard Kaindl <[email protected]>

ocaml/xcp-rrdd/scripts/rrdd/rrdd.py

@@ -288,7 +288,7 @@ def wait_until_next_reading(self, neg_shift=1):
                 return
             except socket.error:
                 msg = "Failed to contact xcp-rrdd. Sleeping for 5 seconds .."
-                print >> sys.stderr, msg
+                print(msg, file=sys.stderr)
                 time.sleep(5)
 
     def update(self):