tests: Use 'localhost' to match SAN of `integration/fixtures/server.crt`
tests: Use 'localhost' to match SAN of `integration/fixtures/server.crt`

mkumatag/etcd,gyuho/etcd,mkumatag/etcd,ajityagaty/etcd,li-ang/etcd,gyuho/etcd,cockroachdb/etcd,coreos/etcd,etcd-io/etcd,etcd-io/etcd,mqliang/etcd,li-ang/etcd,rnaveiras/etcd,rnaveiras/etcd,mqliang/etcd,dannysauer/etcd,ajityagaty/etcd,mkumatag/etcd,rnaveiras/etcd,coreos/etcd,mqliang/etcd,ajityagaty/etcd,dannysauer/etcd,etcd-io/etcd,cockroachdb/etcd