Reapply "Change test_module_config from copying files to symlink ..." am: 01d31bdc am: 8d347787

Original change: https://android-review.googlesource.com/c/platform/build/soong/+/3110324



Change-Id: I9fd8aff79532608febbc875de3f5f588760c4707
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>