Rewrite protocol BGP op-mode to new format.
Delete old unsupported command.
```
sever@vyos-1.3:~$ show ip bgp dampened-paths
% Unknown command: show ip bgp dampened-paths
sever@vyos-1.3:~$ show ip bgp large-community local-AS
% Large-community malformed
sever@vyos-1.3:~$ show ip bgp large-community no-advertise
% Large-community malformed
sever@vyos-1.3:~$ show ip bgp large-community no-export
% Large-community malformed
sever@vyos-1.3:~$ show ip bgp scan
% Unknown command: show ip bgp scan
```
Add actual new commands.