Verify apps cannot receive ACTION_SNOOZE_WARNING broadcast.

Bug: 177931370
Test: atest tests/cts/hostside/src/com/android/cts/net/HostsideRestrictBackgroundNetworkTests.java
Ignore-AOSP-First: Platform changes related to this are not in AOSP yet.
Change-Id: I6d525c4d88ba01838d51a873251593281b628898
11 files changed