Fix SROS interface assignment
Fix SROS interface assignment

On my VSRs only the first 6 interfaces on every LC works so I'm setting
topomachine to follow that. Maybe need an argument for this!?

mzagozen/vrnetlab,bdreisbach/vrnetlab,plajjan/vrnetlab,holmahenkel/vrnetlab,plajjan/vrnetlab,bdreisbach/vrnetlab,holmahenkel/vrnetlab,mzagozen/vrnetlab