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: Id5f7ee436a18d66ea17e1881f05ed029f65412f7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>