Add benchmark tests
Add benchmark tests

A benchmark for retrieving a single key and one when doing a wildcard
query.

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