Search roles with partial role names

components/device-mgt/io.entgra.device.mgt.core.device.mgt.api/src/main/java/io/entgra/device/mgt/core/device/mgt/api/jaxrs/service/impl/RoleManagementServiceImpl.java

@@ -670,7 +670,7 @@ public class RoleManagementServiceImpl implements RoleManagementService {
         if ((filter == null) || filter.isEmpty()) {
             filter = "*";
         } else {
-            filter += "*";
+            filter = "*" + filter + "*";
         }
         if (log.isDebugEnabled()) {
             log.debug("Getting the list of user roles");