Merge "Enforce hard limits on hosts per package and widgets per host." into sc-dev am: 3cf4626021 am: e065815ce5 am: 3cb5c4bb7f am: b0b38d58c9 am: 6526fb6616 am: 5f1b011ac4

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/29024856

Change-Id: I50abfca0190fdfd93d83a8fe8066f3d6183e5297
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>