tests/e2e: initialize UserAddOptions{} field in testV3CurlAuth()
tests/e2e: initialize UserAddOptions{} field in testV3CurlAuth()

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