Merge from Widevine repo of http://go/wvgerrit/130469
Parse and decode persistent data for reboot tests
Merge from Widevine repo of http://go/wvgerrit/130468
Save and restore persistent test data
Merge from Widevine repo of http://go/wvgerrit/130467
Saving and restore the test host's file system
Merge from Widevine repo of http://go/wvgerrit/130466
Add reboot test class
Test: android/run_reboot_test.sh and jenkins/run_fake_l1_tests
Bug: 194342751
Bug: 194342800
Change-Id: Id2f3d9850cb75cb286f7863738aa8fd38a1a5301
