Remove podman

Merge Request Description

Replace use of podman, so we can pull it from the runner image. Also makes some adjustments to move files instead of copying them, as well as checking for the os-type label first, in the oscap stage.

Merge Request BOE

Risk

Build or oscap failures

Rollback Plan

revert MR

Testing

Staging pipelines on UBI8 in mario

• build
• oscap