Merge "Info the am instrumentation if test process attach failed." into tm-dev...

Merge "Info the am instrumentation if test process attach failed." into tm-dev am: 91fa7a8d am: 6d10a577 am: c52b06fd

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/18111564



Change-Id: I98ff760503108bcce6b4e52484b303673b632bc3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>