Merge "Trim any long string inputs that come in to AutomaticZenRule" into tm-dev am: de7b49d1

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19816377



Change-Id: I6edf0c3d9a680354dd536b3112137c1331e9b5c1
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>