Eventhub scalar fix (#537)

* Event Hub scalar expansion to work with Java and C# applications
- Made changes to event hub scalar codes

* Fixed variable declaration and value assignment bug for Event Hub Scalar

* Removed trailing spaces from blob store endpoint suffix for event hub scalar

pkg/scalers/azure_eventhub.go

@@ -80,6 +80,9 @@ func GetCheckpointFromBlobStorage(ctx context.Context, partitionID string, event
  return Checkpoint{}, fmt.Errorf("unable to parse storage connection string: %s", err)
  }
 
+ // Remove trailing spaces from endpointSuffix
+ endpointSuffix = strings.TrimSpace(endpointSuffix)
+
  eventHubNamespace, eventHubName, err := ParseAzureEventHubConnectionString(eventHubMetadata.eventHubConnection)
  if err != nil {
  return Checkpoint{}, fmt.Errorf("unable to parse event hub connection string: %s", err)