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

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



Change-Id: Ic7a5b8c7c15e4927d7bf317223ca242d36b9058c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>