message: Add one second wait time in notify.py
  Just wait a little after sync so before checking the existence of the files
  because there is spurious failure happening right at this point from time to
  time.
diff: @@ -91,6 +91,7 @@ class NotifyTest(BitcoinTestFramework):
  # mine a block. Both nodes should have created a file: newfile1 and newfile3.
  self.nodes[1].generate(1)
  self.sync_all()
  + time.sleep(1)
  # check blocknotify - both nodes should have run the blocknotify command.
  if not os.path.isfile(self.touch_filename1):
  