Merge "Javadoc improvements related to the device policy management role...

Merge "Javadoc improvements related to the device policy management role holder updater" into tm-dev am: c3dbe772 am: b202b389

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17044806

Change-Id: If792229c1a94338d47d911effff5a737c76b0d31