Merge "Trim any long string inputs that come in to AutomaticZenRule" into tm-qpr-dev am: f5f9c1ec

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/19794266



Change-Id: Icbf3cd03cd1ede0817e7c23596861c070781c34c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>