OSPF ANVL failures in 3.0

OSPF ANVL failures in 3.0

Signed-off-by: Daniel Walton <dwalton@cumulusnetworks.com>
Reviewed-by:   Donald Sharp <sharpd@cumulusnetworks.com>
Ticket: CM-10088

When we pulled this patch from upstream there was one spot where we
incorrectly used min_ls_interval (5s) instead of min_ls_arrival (1s).
commit ac7424f9dec0d49d891e0b457afa8e31c2b854fe
Author: Michael Rossberg <michael.rossberg@tu-ilmenau.de>
Date:   Mon Jul 27 21:05:44 2015 +0200

    configuration options for faster OSPF convergence

    Allow configuration of faster OSPF convergence via the
    min_ls_interval and min_ls_arrival timer lengths.

    This patch was originated by Michael, and cross-ported
    to Cumulus's Quagga.