Merge "Add limits on BlobHandle label and lease expiry strings." into rvc-dev am: 7434322aef am: 19bac42558 am: 04cfb36d1f

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12013588

Change-Id: I72a86423b3c2726aec6968bc29a9c6622632b38c