Fix issue in deploying event streams

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/beans/analytics/AttributeType.java

@@ -1,7 +1,7 @@
 /*
- * Copyright (c) 2019, Entgra (pvt) Ltd. (http://entgra.io) All Rights Reserved.
+ *   Copyright (c) 2017, WSO2 Inc. (http://www.wso2.org) All Rights Reserved.
  *
- * Entgra (pvt) Ltd. licenses this file to you under the Apache License,
+ *   WSO2 Inc. licenses this file to you 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
@@ -14,6 +14,7 @@
  *   KIND, either express or implied.  See the License for the
  *   specific language governing permissions and limitations
  *   under the License.
+ *
  */
 package org.wso2.carbon.device.mgt.jaxrs.beans.analytics;
 
@@ -22,5 +23,9 @@ package org.wso2.carbon.device.mgt.jaxrs.beans.analytics;
  */
 public enum AttributeType {
     STRING, LONG, BOOL, INT, FLOAT, DOUBLE;
-}
 
+    @Override
+    public String toString() {
+        return super.toString().toLowerCase();
+    }
+}