shared/unattended/RHEL-6.3.ks

  - testing audio requires a loopback device
   This loads alsa loopback kernel modules by default at each start
   of our VMs.
   Note, that this does not modify the default devices.
  - add Smart Card support packages to the VMs for testing
  - add possibility to shutdown VM under test user

Signed-off-by: Tomas Jamrisko <tjamrisk@redhat.com>
Signed-off-by: Vimal Patel <vipatel@redhat.com>
Signed-off-by: Marian Krcmarik <mkrcmari@redhat.com>