autotest/autotest — pull request #181 by clebergnu (2012-02-15 12:24:37+00:00)
Title: Virt: fix kvm_vm.VM.add_cdrom() when format=None

virtio-scsi commit a9ea704a5f262b03d020f853c24d8b2117afc6a3
introduced a condition that fails when no "cd_format" option is
passed in the configuration file, which happens in the default
qemu_kvm_f16_quick test set.

Signed-off-by: Cleber Rosa