Python global logger is polluted when importing certain resmokelib modules

It was discovered that the global logging in buildscripts/update_test_lifecycle.py gets overriden by buildscripts/mobile/adb_monitor.py because of the resmokelib imports.

The file buildscripts/mobile/benchrun_embedded_setup_android.py also has similar issue.

The logging setting should not be done in the global scope but in the main function:

logging.basicConfig(format="%(asctime)s %(levelname)s %(message)s", level=logging.INFO)