Enable roles containing the filter to be listed in role listing

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

@@ -606,6 +606,8 @@ public class RoleManagementServiceImpl implements RoleManagementService {
         String[] roles;
         if ((filter == null) || filter.isEmpty()) {
             filter = "*";
+        } else {
+            filter += "*";
         }
         if (log.isDebugEnabled()) {
             log.debug("Getting the list of user roles");