[dts] [PATCH V1] test_plans/:update cvl_iavf_rss_gtpu_test_plan format

[Tu, Lijuan]

> 1. rename cvl_iavf_rss_gtpu_test_plan.rst to
> cvl_advanced_iavf_rss_gtpu_test_plan.rst
> 2. modify table format
> 3. modify "flow validate" to "flow create" for some rules
> 
> Signed-off-by: qifu <qi.fu at intel.com>

Applied