Merge #434: [0.17] Test: Fix example_test.py

1f1c7df Test: Fix example_test.py (Jorge Timón)

Pull request description:

  Fix this useful test in -extended.

  IMO should be backported to bitcoin/0.17, but I'm not sure if it's wanted there.

Tree-SHA512: d67c186c3dd59d13ec7c9cc79ae6dfd5a0dbd2ea76a8e3b5eb0020dedd08e004929741ed7b4ac9ca2a30da10b11e73179b0967023f59892eb59cb8d68ca67294

Author: jtimon

test/functional/example_test.py

@@ -15,8 +15,10 @@
 
 # Avoid wildcard * imports if possible
 from test_framework.blocktools import (create_block, create_coinbase)
-from test_framework.mininode import (
+from test_framework.messages import (
     CInv,
+)
+from test_framework.mininode import (
     P2PInterface,
     mininode_lock,
     msg_block,