Merge pull request #6801 from ton31337/feature/force_maximum-prefix_for_filtered_routes

bgpd: Add a knob to force maximum-prefix even for filtered routes

diff --cc bgpd/bgp_route.c
Simple merge

diff --cc bgpd/bgp_vty.c
Simple merge

diff --cc bgpd/bgpd.c
Simple merge

diff --cc bgpd/bgpd.h
Simple merge

diff --cc doc/user/bgp.rst
Simple merge