test: refactor sorts of tests into separate functions
test: refactor sorts of tests into separate functions

vimalk78/etcd,dannysauer/etcd,qqsun8819/etcd,sebrandon1/etcd,vimalk78/etcd,luxas/etcd,sofuture/etcd,rchicoli/etcd,plasticbox/etcd,mickep76/etcd,linuxcer/etcd,ktateish/etcd,mqliang/etcd,qqsun8819/etcd,raoofm/etcd,shawnps/etcd,jlamillan/etcd,mkumatag/etcd,swingbach/etcd,tguangch/etcd,luxas/etcd,ktateish/etcd,ajityagaty/etcd,li-ang/etcd,purpleidea/etcd,westhood/etcd,mkumatag/etcd,jlamillan/etcd,ravigadde/etcd,akauppi/etcd,armstrongli/etcd,xiang90/etcd,achanda/etcd,raoofm/etcd,sebrandon1/etcd,ajityagaty/etcd,siddontang/etcd,nekto0n/etcd,visheshnp/etcd,tguangch/etcd,etcd-io/etcd,lumjjb/etcd,mickep76/etcd,zaphod-concur/etcd,gyuho/etcd,hongchaodeng/etcd,xiang90/etcd,joshix/etcd,insequent/etcd,wantonsolutions/dinv-etcd,yudai/etcd,gyuho/etcd,handsomesun/etcd,dannysauer/etcd,visheshnp/etcd,swingbach/etcd,sinsharat/etcd,joshix/etcd,glycerine/etcd,lumjjb/etcd,sinsharat/etcd,rchicoli/etcd,bdarnell/etcd,glycerine/etcd,mkumatag/etcd,jonboulle/etcd,endocode/etcd,jonboulle/etcd,rnaveiras/etcd,lorneli/etcd,fanminshi/etcd,rnaveiras/etcd,OyTao/etcd_learning,li-ang/etcd,YuleiXiao/etcd,glevand/coreos--etcd,cockroachdb/etcd,lorneli/etcd,bluebreezecf/etcd,mqliang/etcd,heyitsanthony/etcd,heyitsanthony/etcd,tamird/etcd,dnaeon/etcd,OyTao/etcd_learning,a-robinson/etcd,whuwxl/etcd,coreos/etcd,dnaeon/etcd,yudai/etcd,handsomesun/etcd,endocode/etcd,zaphod-concur/etcd,rnaveiras/etcd,mqliang/etcd,tamird/etcd,glevand/coreos--etcd,wantonsolutions/dinv-etcd,shawnps/etcd,armstrongli/etcd,akauppi/etcd,nekto0n/etcd,bdarnell/etcd,achanda/etcd,StorReduce/etcd,YuleiXiao/etcd,ravigadde/etcd,bluebreezecf/etcd,plasticbox/etcd,westhood/etcd,CrazyJvm/etcd,hongchaodeng/etcd,fanminshi/etcd,purpleidea/etcd,CrazyJvm/etcd,cockroachdb/etcd,sofuture/etcd,linuxcer/etcd,chipironcin/etcd,ajityagaty/etcd,whuwxl/etcd,wantonsolutions/dinv-etcd,insequent/etcd,a-robinson/etcd,chipironcin/etcd,etcd-io/etcd,etcd-io/etcd,siddontang/etcd,StorReduce/etcd,coreos/etcd