BGP command 'neighbor x.x.x.x local-as <1-4294967295>'  not implemented

!Version OpenSwitch 0.4.0 (Build: genericx86-64-ops-0.4.0-meraswitch/devel/master-20170113050115-de
!Schema version 0.1.8

```
switch(config-router)# neighbor AS_77 local-as 
  <1-4294967295>  AS number used as local AS
switch(config-router)# neighbor AS_77 local-as 2
This command is not yet implemented but here are the parameters:
argc = 2
   arg 0: AS_77
   arg 1: 2
```
