Refactor `AbstractSimpleTransportTestCase` and `MockTransportService` to not use `Version.transportVersion` 
test/framework/src/main/java/org/elasticsearch/transport/AbstractSimpleTransportTestCase.java
assertThat(tracerA.responseReceived.get(), equalTo(1));
            assertThat(tracerA.responseSent.get(), equalTo(0));
            assertThat(tracerB.requestsReceived.get(), equalTo(1));
            assertThat(tracerB.requestsSent.get(), equalTo(0));
            assertThat(tracerB.responseReceived.get(), equalTo(0));
            assertThat(tracerB.responseSent.get(), equalTo(1));
        });
        try {
            submitRequest(serviceB, nodeA, ACTION, TransportRequest.Empty.INSTANCE, EmptyTransportResponseHandler.INSTANCE_SAME).get();
        } catch (ExecutionException e) {
            assertThat(e.getCause(), instanceOf(ElasticsearchException.class));
            assertThat(ExceptionsHelper.unwrapCause(e.getCause()).getMessage(), equalTo("simulated"));
        }
        
        assertBusy(() -> {
            assertThat(tracerA.requestsReceived.get(), equalTo(1));
            assertThat(tracerA.requestsSent.get(), equalTo(1));
            assertThat(tracerA.responseReceived.get(), equalTo(1));
            assertThat(tracerA.responseSent.get(), equalTo(1));
            assertThat(tracerB.requestsReceived.get(), equalTo(1));
            assertThat(tracerB.requestsSent.get(), equalTo(1));
            assertThat(tracerB.responseReceived.get(), equalTo(1));
            assertThat(tracerB.responseSent.get(), equalTo(1));
        });
        
        try {
            submitRequest(serviceA, nodeA, ACTION, TransportRequest.Empty.INSTANCE, EmptyTransportResponseHandler.INSTANCE_SAME).get();
        } catch (ExecutionException e) {
            assertThat(e.getCause(), instanceOf(ElasticsearchException.class));
            assertThat(ExceptionsHelper.unwrapCause(e.getCause()).getMessage(), equalTo("simulated"));