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

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



Change-Id: I73366d0d27f13dd831a96e5e88d0b01e2366f073
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>