Merge "Store ETWS primary information in the database" into rvc-dev am: dc9e545b am: 74f7d0ff am: 41e385b9

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/11712801

Change-Id: I9d67b0df79b0122f5443fe2622ba79a57edd0425