Merge "Create carrier configs for MCC/MNC-specific roaming notification" into udc-qpr-dev am: f56282d31d

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/25499009

Change-Id: I91f2c4b87d4d0be279d082f11b4344c82e8fd523
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>