Ensure battery saving modes are disabled.

Syncs will be deferred if battery saver's forceAllAppStandby toggle is
enabled, so make sure both adaptive and full battery saver are disabled
for the test.

Bug: 160295401
Test: atest CtsSyncManagerTestsCases
Change-Id: I080f7d65234332405852c56f9a205e6c9d7df4a7
2 files changed