Merge "Store ETWS primary information in the database" into rvc-dev am: dc9e545b am: 28becbf0 am: 5f551b7c

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

Change-Id: I45049ce88b90a71409c07d77f2b4a34c779c8be0