Merge "Support third_party.identifier in METADATA files of external packages."...

Merge "Support third_party.identifier in METADATA files of external packages." into main am: ee736598

Original change: https://android-review.googlesource.com/c/platform/build/+/2795360



Change-Id: Iff3c5598e468d6774f2d0b412af625b415f20de4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>