add METADATA file am: b026ecd62b am: 26b2b7ccf4 am: 08bca01f9a am: af990cca49

Original change: https://android-review.googlesource.com/c/platform/external/bazelbuild-rules_testing/+/2583100

Change-Id: I6fb7a7ae46494a8862505351b327d3a0997a4983
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>