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

Add google_prod_creds to the list of auth mechanisms am: f7574b54 am: f6c29aa6 am: 6e9b4d65 am: 2fefa570 am: e5eb2c42

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



Change-Id: Ibb5d651911e050254c1e185d9d786d1524b096f4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>