Merge pull request #9439 from ton31337/feature/set_ext_community_to_none

bgpd: Route-map `set extcommunity none`

diff --cc bgpd/bgp_routemap_nb_config.c
Simple merge

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

diff --cc lib/routemap.h
Simple merge

diff --cc lib/routemap_cli.c
Simple merge