Merge pull request #12805 from karlquan/kquan_self_orig

bgpd: BGP troubleshooting - Add a keyword self-originate to display o…

diff --cc bgpd/bgp_evpn_vty.c
Simple merge

diff --cc bgpd/bgp_route.c
Simple merge

diff --cc bgpd/bgp_route.h
Simple merge

diff --cc bgpd/bgp_vty.h
Simple merge

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