Python functional tests should log in UTC

bitcoind logs use UTC. Python functional tests should also log in UTC.

test/functional/test_framework/test_framework.py

@@ -10,6 +10,7 @@ import os
 import sys
 import shutil
 import tempfile
+import time
 import traceback
 
 from .util import (
@@ -202,6 +203,7 @@ class BitcoinTestFramework(object):
         ch.setLevel(ll)
         # Format logs the same as bitcoind's debug.log with microprecision (so log files can be concatenated and sorted)
         formatter = logging.Formatter(fmt = '%(asctime)s.%(msecs)03d000 %(name)s (%(levelname)s): %(message)s', datefmt='%Y-%m-%d %H:%M:%S')
+        formatter.converter = time.gmtime
         fh.setFormatter(formatter)
         ch.setFormatter(formatter)
         # add the handlers to the logger