Merge "Minor refactor tools/releasetools/common.py" into main am: 50e5fbd6

Original change: https://android-review.googlesource.com/c/platform/build/+/2769023



Change-Id: Ia0fdef30d550535aec9bd368535596198e2c6a9d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>