vr-bgp: remove tgz after unpack
vr-bgp: remove tgz after unpack

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