Merge from http://go/wvgerrit/158917
Use go/yamllint as reference and obfuscate portion of output to
run on an online yaml validator.
Sample output: http://go/cl/481370906
Test: Netflix, Play TV and Movies, Youtube
Test: adb shell dumpsys android.hardware.drm.IDrmFactory/widevine
Test: ./build_and_run_all_unit_tests.sh
Bug: 239462891
Change-Id: I1abf1aa50aa25b97b1f6c10995c324d6de04d056