Merge pull request #1263 from ruwany/master

Fixing serialization issue due to changes added to Operations DTO

components/device-mgt/org.wso2.carbon.device.mgt.core/src/main/java/org/wso2/carbon/device/mgt/core/dto/operation/mgt/Operation.java

@@ -23,6 +23,8 @@ import java.util.Properties;
 
 public class Operation implements Serializable {
 
+    private static final long serialVersionUID = -353614864628915060L;
+
     public enum Type {
 		CONFIG, MESSAGE, INFO, COMMAND, PROFILE , POLICY
 	}