role:kvm_vm: Support for Kickstart

[markuslf]

Currently, the role requires you to provide a custom OS image. IMHO it would be much more flexible if the role also supported kickstart installations (e.g. using our kickstart file from https://github.com/Linuxfabrik/kickstart) on a standard RHEL ISO image.

[NavidSassan]

would be useful to also have that option, for example when creating base images. currently the goal was that the deploymetn is as close to cloud providers as possible