Merge "Keep fs_mgr_vendor_overlay_test in internal cf." into main am: ec74e27a61

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2765988

Change-Id: I8e861c8f49cb21acd45ef97c9009ccfb65658870
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>