[Android][telemetry] Update pylib imports for modules that moved into devil.

build/android/pylib/utils/test_environment.py

 # Copyright 2013 The Chromium Authors. All rights reserved.
 # Use of this source code is governed by a BSD-style license that can be
 # found in the LICENSE file.
 
 import logging
 import psutil
 import signal
 
-from pylib.device import device_errors
-from pylib.device import device_utils
+from devil.android import device_errors
+from devil.android import device_utils
 
 
 def _KillWebServers():
   for s in [signal.SIGTERM, signal.SIGINT, signal.SIGQUIT, signal.SIGKILL]:
     signalled = []
     for server in ['lighttpd', 'webpagereplay']:
       for p in psutil.process_iter():
         try:
           if not server in ' '.join(p.cmdline):
             continue
@@ skipping 21 matching lines @@
   def cleanup_device(d):
     d.RestartAdbd()
     try:
       d.EnableRoot()
     except device_errors.CommandFailedError:
       logging.exception('Failed to enable root')
     d.WaitUntilFullyBooted()
 
   device_utils.DeviceUtils.parallel(devices).pMap(cleanup_device)