wifi_test_utils.py:fix insconsistent ad obj usage
Several functions use AndroidDevice object (ad) to run
functions on the device. Some create temp variables
for the ad object and others use 'ad' directly.
(Ex: droid = ad.droid or serial = ad.serial)
1. Modified all (droid/ed/serial) calls to ad.(droid/ed/serial)
2. Deleted the temp variables
3. There are two types of logging modules a.) One using 'import logging'
b.) using log module from AndroidDevice object. Deleted the temp
variable log=logging and used 'logging' for all such calls for
consistency
Bug: 31807631
Test: All acts/tests/google/wifi/ scripts that depend on this change
(Bug: 32444469 for test results after the fix)
Change-Id: Ic101da411c78333763240aecd26e0ead8ce3c5e4
1 file changed