[dts] [PATCH V1]test_plans/cvl_advanced_iavf_rss_gtpu: update negative cases for iavf gtpu rss

[Tu, Lijuan]

> as the dpdk fixed the issue of negative cases, need to update test cases
> according to code design.
> 
> Signed-off-by: qifu <qi.fu at intel.com>

Applied, thanks