Allow host cow_converter to change compression param am: 83bb5d5fd2

Original change: https://android-review.googlesource.com/c/platform/system/update_engine/+/2816329

Change-Id: Ib03ab473bc01f45e146f9b8c8b0a1ef91f83aa7b
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>