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: Iaf1d2d1160de60cb18107431e83c2f3a5d53ab9a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>