Merge "binderLibTest: wait longer to start all threads" am: 4477824cc4 am: 45636073b7

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2152317

Change-Id: Ieaac0894d064f658ccbea6a68975821e1f8b51fb
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>