Update KVM roles to deploy RHEL 8 based systems

[kjw3]

[jritenour]

Virt customize has issues with the differences in xfs between RHEL 7 & 8 at per https://access.redhat.com/solutions/4073061.

Ansiblized steps to workaround it.

• hosts: localhost tasks:

  • unarchive: src: http://download.libguestfs.org/binaries/appliance/appliance-1.40.1.tar.xz dest: /tmp creates: /tmp/appliance remote_src: yes

  • shell: virt-customize -a rhel-8.1-x86_64-kvm.qcow2 --root-password password:SomePassword12345! environment: LIBGUESTFS_PATH: /tmp/appliance