fix(fvt): Metadata version in ensureFullyReplicated

- use correct metadata version for target kafka in ensureFullyReplicated
- skip full metadata and apiversionsrequest as we just want to check the
  test topics are fully replicated

Signed-off-by: Dominic Evans <dominic.evans@uk.ibm.com>

functional_test.go

@@ -475,9 +475,11 @@ func teardownFunctionalTest(t testing.TB) {
 
 func ensureFullyReplicated(t testing.TB, timeout time.Duration, retry time.Duration) {
 	config := NewFunctionalTestConfig()
+	config.Metadata.Full = false
 	config.Metadata.Retry.Max = 5
 	config.Metadata.Retry.Backoff = 10 * time.Second
 	config.ClientID = "sarama-ensureFullyReplicated"
+	config.ApiVersionsRequest = false
 
 	var testTopicNames []string
 	for topic := range testTopicDetails {
@@ -502,7 +504,8 @@ func ensureFullyReplicated(t testing.TB, timeout time.Duration, retry time.Durat
 				return nil, fmt.Errorf("failed to connect to kafka controller: %w", err)
 			}
 			defer controller.Close()
-			return controller.GetMetadata(&MetadataRequest{Version: 5, Topics: testTopicNames})
+			request := NewMetadataRequest(config.Version, testTopicNames)
+			return controller.GetMetadata(request)
 		}()
 		if err != nil {
 			Logger.Printf("failed to get metadata during test setup: %v\n", err)