Merge "cargo2android.py:vendor and vendor_ramdisk flags." am: 52a6dbe9d3 am: fe432ba9f7 am: 6da47720f9

Original change: https://android-review.googlesource.com/c/platform/development/+/1770108

Change-Id: Ie9cc67c9d12eb7b90fc11a00a8e4b9ac15a0e176