Now that it's converted to an ansible module and used in the ansible role we can get rid of the script. We do've cli command for container image prepare. Depends-On: https://review.opendev.org/745510 Depends-On: https://review.rdoproject.org/r/#/c/28951 Change-Id: I6871377f2ea4030b35fabca7f68f331e5a4f3795