Bump Go stream client to v0.13-alpha

[ansd]

@Gsantomaggio I bumped the Go stream client in the system tests to latest released v0.7-alpha.
System tests are now failing with

• Failure [26.663 seconds]
Operator
/home/runner/work/cluster-operator/cluster-operator/system_tests/system_test.go:35
  when (web) MQTT, STOMP, and stream plugins are enabled
  /home/runner/work/cluster-operator/cluster-operator/system_tests/system_test.go:537
    publishes and consumes a message [It]
    /home/runner/work/cluster-operator/cluster-operator/system_tests/system_test.go:568

    Unexpected error:
        <*net.DNSError | 0xc0007ad180>: {
            Err: "no such host",
            Name: "mqtt-stomp-stream-server-0.mqtt-stomp-stream-nodes.rabbitmq-system",
            Server: "",
            IsTimeout: false,
            IsTemporary: false,
            IsNotFound: true,
        }
        lookup mqtt-stomp-stream-server-0.mqtt-stomp-stream-nodes.rabbitmq-system: no such host
    occurred

    /home/runner/work/cluster-operator/cluster-operator/system_tests/utils.go:971

because https://github.com/rabbitmq/rabbitmq-stream-go-client/blob/3356a455a15a24877ca82911594ad64c842008a3/pkg/stream/server_frame.go#L426 adds a wrong hostname and port: It adds the K8s internal hostname mqtt-stomp-stream-server-0.mqtt-stomp-stream-nodes.rabbitmq-system instead of the K8s node IP address and it adds port 5552 instead of the K8s node port although K8s node IP address and K8s node port are set in

cluster-operator/system_tests/utils.go

Lines 952 to 953 in 6f1c4df

	Host: host,
	Port: port,

The Go client in the system tests runs outside the K8s cluster.
System tests use Service type NodePort.

Is there a way to use the Go client outside a K8s cluster with Service type NodePort?
It used to work with the older version github.com/rabbitmq/rabbitmq-stream-go-client v0.0.0-20210422170636-520637be5dde.

[Gsantomaggio]

@ansd sorry for the delay. Now it works :)

[ansd]

This is great @Gsantomaggio, thank you for making it work 🚀