Merge "Move signing related options to a shared place" into main am:...

Merge "Move signing related options to a shared place" into main am: 5003ff74 am: ccdb708c am: 71b35f07

Original change: https://android-review.googlesource.com/c/platform/build/+/2828703



Change-Id: Ia6494fd5afedd43ecbc9f54b104eb4d875d87f83
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>