Fix bug with earlier code by reading from the base config

Signed-off-by: Arun Yogesh 6723526+ArunYogesh@users.noreply.github.com

pkg/scalers/kafka_scaler.go

@@ -292,6 +292,10 @@ func parseKerberosParams(config *scalersconfig.ScalerConfig, meta *kafkaMetadata
 	}
 	meta.kerberosConfigPath = path
 
+	if config.AuthParams["serviceName"] != "" {
+		meta.serviceName = strings.TrimSpace(config.AuthParams["serviceName"])
+	}
+
 	meta.saslType = mode
 	return nil
 }