Merge "added call notif exemption to PostNotificationRunnable and enhanced...

Merge "added call notif exemption to PostNotificationRunnable and enhanced relevant tests Test: NotificationManagerServiceTest Fixes: 227456870" into tm-dev am: 8626041c

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18169687



Change-Id: I555502fbccf014cd624f449cfde2925b4244a1c4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>