Merge "Load a list of plugins from vendor/google_clockwork" into main am: c9ef6f71 am: 57e7d2f4

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/2798384



Change-Id: I00a685d2e091de5d4161df7d23ef9bd8b1a4a04c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>