message: fix iteritems -> items
  Summary:
  fixed exception
  File "/private/tmp/redex.eNWbjc/pyredex/logger.py", line 65, in strip_trace_tag
  trace_str += ','.join(k + ':' + str(v) for k, v in trace.iteritems())
  AttributeError: 'dict' object has no attribute 'iteritems'
  Closes
diff: @@ -64,7 +64,7 @@ def strip_trace_tag(env):
  trace.pop(ALL)
  else:
  trace_str = ''
  - trace_str += ','.join(k + ':' + str(v) for k, v in trace.iteritems())
  + trace_str += ','.join(k + ':' + str(v) for k, v in trace.items())
  env['TRACE'] = trace_str
  except KeyError:
  pass
  