Previously we would only suport from-lport and to-lport. Add 'both' support to allow all modes that are available in OVN [0]. [0] https://man7.org/linux/man-pages/man5/ovn-nb.5.html#Mirror_TABLE Depends-On: https://review.opendev.org/c/openstack/neutron-lib/+/969962 Resolves-Bug: #2134096 Change-Id: I62759163381e647413bed510b756994920c178c7 Signed-off-by: Elvira Garcia <egarciar@redhat.com>