Changed assertions to be compatible with python2.6
Changed assertions to be compatible with python2.6

spidercensus/py-junos-eznc,Juniper/py-junos-eznc,spidercensus/py-junos-eznc,pklimai/py-junos-eznc,pklimai/py-junos-eznc,spidercensus/py-junos-eznc,Juniper/py-junos-eznc,Juniper/py-junos-eznc,pklimai/py-junos-eznc