Remove the expire test
Remove the expire test

This clashes with the cache testing/benchmarking and more importantly
it actually tests an etcd feature (=correctly expiring stuff).

zvelo/zvelo-skydns,ZeaLoVe/skydns,zhang0137/skydns,netf/skydns,andrewrothstein/skydns,tonicbupt/skydns,vinhhrv/skydns,skynetservices/skydns,loveshell/skydns,hw-qiaolei/skydns,no2key/skydns,AdoHe/skydns,weekface/skydns,tuannvm/skydns,nicescale/skydns,erimatnor/skydns-kubernetes,smarterclayton/skydns,yonglehou/skydns