zebra: mark multicast commands experimental

depending on feedback from actually having these commands in a released
version, we may want to adjust them.  Thus, mark them as experimental so
users are aware of this.

Cc: Everton Marques <everton.marques@gmail.com>
Cc: Balaji G <balajig81@gmail.com>
Signed-off-by: David Lamparter <equinox@opensourcerouting.org>
2 files changed