tests/functional/test_vnc: Skip test if VNC support is not available

These tests currently fail if VNC support has not been compiled into
the QEMU binary. Let's add some checks to skip the tests in that
case instead.

Message-ID: <20250325064715.278876-1-thuth@redhat.com>
Reviewed-by: Daniel P. Berrangé <berrange@redhat.com>
Signed-off-by: Thomas Huth <thuth@redhat.com>
1 file changed