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

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

Change-Id: Ib69dce5f5a5e6e463544070794da7ce9b76aeea5