Merge "Check if freezer cgroup configuration is valid" into udc-dev am:...

Merge "Check if freezer cgroup configuration is valid" into udc-dev am: 8c9fd0d8 am: 245f7d88 am: 22c5f6e7 am: 6fd92510

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/22918310



Change-Id: Ie78a6cdad079dd957879b839945400c8a1c6e9cd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>