bgpd: make _vpnv4 static handling SAFI-agnostic

This changes the existing _vpnv4 functions for MPLS-VPN into
SAFI-agnostic functions, renaming them from *_vpnv4 to *_safi.

Also adds route-map support while at it.

Signed-off-by: Lou Berger <lberger@labn.net>
Reviewed-by: David Lamparter <equinox@opensourcerouting.org>
3 files changed