[Telemetry] Move discover to common/py_utils

telemetry/telemetry/core/platform.py

 # Copyright 2012 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 as real_logging
 import os
 import sys
 
-from telemetry.core import discover
 from telemetry.core import local_server
 from telemetry.core import memory_cache_http_server
 from telemetry.core import network_controller
 from telemetry.core import tracing_controller
 from telemetry.core import util
 from telemetry.internal.platform import (platform_backend as
                                          platform_backend_module)
 
+from py_utils import discover
+
 _host_platform = None
 # Remote platform is a dictionary from device ids to remote platform instances.
 _remote_platforms = {}
 
 
 def _InitHostPlatformIfNeeded():
   global _host_platform
   if _host_platform:
     return
   backend = None
@@ skipping 395 matching lines @@
   def HasBattOrConnected(self):
     return  self._platform_backend.HasBattOrConnected()
 
   def WaitForBatteryTemperature(self, temp):
     """Waits for the battery on the device under test to cool down to temp.
 
     Args:
       temp: temperature target in degrees C.
     """
     return self._platform_backend.WaitForBatteryTemperature(temp)