Merge "Add read/write logic for SubscriptionPlan network types field" into rvc-d1-dev am: 76b7c3ccb4 am: 2ca98d2057

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/12691247

Change-Id: Ie8d6396287d02c27d8860daa0a7d455f15d9a635