系统管理，供应商用户新增接口封装

uboot-common/src/main/java/com/chinaunicom/mall/ebtp/common/base/fallback/SystemClientFallback.java

@@ -29,6 +29,11 @@ public class SystemClientFallback implements SystemClient {
         return null;
     }
 
+    @Override
+    public BaseResponse<SysSupplierUser> register(SupplierRegistrationVO registrationVO) {
+        return null;
+    }
+
     @Override
     public BaseResponse<List<SysOrg>> getOrgWithChildren(SysOrg sysOrg) {
         return null;