Add test_mapping rule. am: 6537f46832

Original change: https://android-review.googlesource.com/c/platform/build/bazel_common_rules/+/2066969

Change-Id: I85307366292645f98206f5d93012bb5acf971ccf
Ignore-AOSP-First: this is an automerge
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>