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

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

Change-Id: I26d69f0257354d5070f727970191e6e9b0bdc837
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>