Add kas container to dsop-scripts

There are customers using the IronBank GitLab containers who wish to use the GitLab agent for Kubernetes. They have requested that the relevant containers (kas and agentk) be added in IronBank. Because kas will run alongside the Ironbank gitlab server containers, we would like to start with that. Adding agentk will be tracked in a separate issue.

A project in repo1 has been created for this container: https://repo1.dso.mil/dsop/gitlab/gitlab/gitlab-kas

Kas uses ubi-minimal as its base container https://gitlab.com/gitlab-org/build/CNG/-/blob/master/gitlab-kas/Dockerfile.ubi8#L1 so this effort is blocked on #4 (closed). Completing #3 (moved) prior to this may be worth considering as well.