This test requires a cell network so the test will be failed if
the device does not support telephony. Add a condition to check
if the device supports telephony and skip cellular battery stats
test if telephony is not supported.
Bug: 196231205
Test: atest CtsNetTestCases:BatteryStatsManagerTest
Change-Id: I9ddc1da2a3f83f3fd2ab59059185f2f7a8d08701
Merged-In: I9ddc1da2a3f83f3fd2ab59059185f2f7a8d08701
6d546271b2