Merge branch 'rest-api-improvements' of https://github.com/wso2/carbon-device-mgt into rest-api-improvements

components/device-mgt/org.wso2.carbon.device.mgt.api/src/main/java/org/wso2/carbon/device/mgt/jaxrs/service/impl/UserManagementServiceImpl.java

@@ -84,7 +84,7 @@ public class UserManagementServiceImpl implements UserManagementService {
                     log.debug("User '" + userWrapper.getUsername() + "' has successfully been added.");
                 }
                 // returning response with success state
-                return Response.status(Response.Status.OK).entity("User by username: " + userWrapper.getUsername() +
+                return Response.status(Response.Status.CREATED).entity("User by username: " + userWrapper.getUsername() +
                         " was successfully added.").build();
             }
         } catch (UserStoreException e) {