Add google_prod_creds to the list of auth mechanisms am: f7574b54 am: f6c29aa6

Original change: https://googleplex-android-review.googlesource.com/c/platform/build/soong/+/18890432



Change-Id: I7c7c7f9b7e855d69a6ab7fe197ca3ca8cae81e29
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>