Rewrite protocol BGP op-mode to
the new format.
Delete old unsupported command
s.
```
[email protected]:~$ show ip bgp dampened-paths
% Unknown command: show ip bgp dampened-paths
[email protected]:~$ show ip bgp large-community local-AS
% Large-community malformed
[email protected]:~$ show ip bgp large-community no-advertise
% Large-community malformed
[email protected]:~$ show ip bgp large-community no-export
% Large-community malformed
[email protected]:~$ show ip bgp scan
% Unknown command: show ip bgp scan
```
Add actual new commands.