[toolchain-utils] Fix remaining lint errors in toolchain-utils.

In addition to fixing the lint errors, this also fixes the Python
formatting issues (ran tc_pyformat on nearly all the files).

BUG=chromium:570450
TEST=Ran all crosperf & bisect tool unit tests.
     Ran afe_lock_machine.py (check machine status)
     Ran full crosperf test (octane, speedometer, BootPerf) on alex.

Change-Id: Ic86f9192801ac67769f3de30f1c5f0d203ce0831
Reviewed-on: https://chromium-review.googlesource.com/471886
Commit-Ready: Caroline Tice <cmtice@chromium.org>
Tested-by: Caroline Tice <cmtice@chromium.org>
Reviewed-by: Manoj Gupta <manojgupta@chromium.org>
diff --git a/update_telemetry_defaults.py b/update_telemetry_defaults.py
index 9ee7d8b..943dc26 100755
--- a/update_telemetry_defaults.py
+++ b/update_telemetry_defaults.py
@@ -1,4 +1,4 @@
-#!/usr/bin/python2
+#!/usr/bin/env python2
 #
 # Copyright 2013 Google Inc. All Rights Reserved.
 """Script to maintain the Telemetry benchmark default results file.
@@ -6,7 +6,6 @@
 This script allows the user to see and update the set of default
 results to be used in generating reports from running the Telemetry
 benchmarks.
-
 """
 
 from __future__ import print_function
@@ -84,8 +83,8 @@
         print("Updated results set for '%s': " % benchmark)
         print('%s : %s' % (benchmark, repr(self._defaults[benchmark])))
       else:
-        print("'%s' is not in '%s's default results list." %
-              (result, benchmark))
+        print("'%s' is not in '%s's default results list." % (result,
+                                                              benchmark))
     else:
       print("Cannot find benchmark named '%s'" % benchmark)