Merge "Adds an --overwrite flag to always overwrite install dir." am: 7c7b7d0ea8 am: 254f45a4dd

Original change: https://android-review.googlesource.com/c/platform/development/+/1405278

Change-Id: I5e03005a38bba83ea2e2cfc47be8e4d7d04b66a5