Task scope: Update deployment on IBM.

The script will probably replace Configuring libvirt volume to Creating KataConfig CR.

Details:To update Libvirt provider specific documentation for 1.7 release

Documentation URL: https://docs.google.com/document/d/1vjrYA55GoHJuIkc7SJG0HAa8wgRIzWBx34kmL1jw264/edit#heading=h.u8qnb1hdua0d

 The above document specifies about ARO. Similarly, we would like to add for Libvirt

Design doc: Enhance the usability of the Libvirt provider for confidential container administrators