Merge "Add read/write logic for SubscriptionPlan network types field" into rvc-d1-dev am: 76b7c3ccb4 am: 2ca98d2057 am: 41835f9549

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

Change-Id: I27c0214a12f4511511baf3ec8344c91b09145c11