Merge "Update LockSettingsCmd's showUsage method to defer to calling...

Merge "Update LockSettingsCmd's showUsage method to defer to calling "locksettings help"." into tm-dev am: a2d50b2b

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/17575563



Change-Id: I11d4fd60582bc10f66f5d7d8706fdf200cd173ed
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>