lease: stop lessors after tests
lease: stop lessors after tests

Signed-off-by: Gyu-Ho Lee <3454051ee3341eb69bdf6fca40899cdad4d86496@gmail.com>

akauppi/etcd,a-robinson/etcd,bluebreezecf/etcd,ajityagaty/etcd,gyuho/etcd,cockroachdb/etcd,sinsharat/etcd,vimalk78/etcd,fanminshi/etcd,etcd-io/etcd,rnaveiras/etcd,bluebreezecf/etcd,mkumatag/etcd,visheshnp/etcd,fanminshi/etcd,xiang90/etcd,mickep76/etcd,bdarnell/etcd,mqliang/etcd,sinsharat/etcd,mkumatag/etcd,vimalk78/etcd,lorneli/etcd,mqliang/etcd,joshix/etcd,sebrandon1/etcd,whuwxl/etcd,gyuho/etcd,ajityagaty/etcd,cockroachdb/etcd,glevand/coreos--etcd,glevand/coreos--etcd,li-ang/etcd,xiang90/etcd,a-robinson/etcd,joshix/etcd,YuleiXiao/etcd,rnaveiras/etcd,mkumatag/etcd,sebrandon1/etcd,akauppi/etcd,visheshnp/etcd,lorneli/etcd,coreos/etcd,bdarnell/etcd,heyitsanthony/etcd,etcd-io/etcd,etcd-io/etcd,heyitsanthony/etcd,li-ang/etcd,ajityagaty/etcd,dannysauer/etcd,mickep76/etcd,dannysauer/etcd,YuleiXiao/etcd,coreos/etcd,mqliang/etcd,rnaveiras/etcd,whuwxl/etcd