Fixed sonar issues - OrchestrationTemplateFileHand

Fixed all sonar issues

Change-Id: Ieece2d0e081a918e841e8ecbaf2b6af1a5d0f3b8
Issue-ID: SDC-343
Signed-off-by: mojahidi <mojahidul.islam@amdocs.com>
diff --git a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/OrchestrationTemplateFileHandler.java b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/OrchestrationTemplateFileHandler.java
index 5e006a2..953d88b 100644
--- a/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/OrchestrationTemplateFileHandler.java
+++ b/openecomp-be/backend/openecomp-sdc-vendor-software-product-manager/src/main/java/org/openecomp/sdc/vendorsoftwareproduct/impl/orchestration/OrchestrationTemplateFileHandler.java
@@ -1,3 +1,19 @@
+/*
+ * Copyright © 2016-2017 European Support Limited
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
 package org.openecomp.sdc.vendorsoftwareproduct.impl.orchestration;
 
 import org.openecomp.sdc.vendorsoftwareproduct.dao.type.VspDetails;
@@ -6,6 +22,7 @@
 
 import java.io.InputStream;
 
+@FunctionalInterface
 public interface OrchestrationTemplateFileHandler {
 
   UploadFileResponse upload(VspDetails vspDetails, InputStream fileToUpload,