test: make test_util more python 3 friendly

The last set of changes to make it backwards compatible with Python 2
required converting the arguments.  That is not compatible on Python 3
unfortunately.  Only perform that on Python 2 to make the utility
compatible with 2 and 3.

Author: compnerd

utils/incrparse/test_util.py

@@ -22,7 +22,8 @@ def escapeCmdArg(arg):
 
 
 def run_command(cmd):
-    cmd = list(map(lambda s: s.encode('utf-8'), cmd))
+    if sys.version_info[0] < 3:
+      cmd = list(map(lambda s: s.encode('utf-8'), cmd))
     print(' '.join([escapeCmdArg(arg) for arg in cmd]))
     return subprocess.check_output(cmd, stderr=subprocess.STDOUT)