[dts] [PATCH V1 3/3] test_plans/cvl_dcf_switch_filter_test_plan.rst: add PPPOE cases

[Tu, Lijuan]

> Subject: [dts] [PATCH V1 3/3] test_plans/cvl_dcf_switch_filter_test_plan.rst: add
> PPPOE cases
> 
> test_plans/cvl_dcf_switch_filter_test_plan.rst: add PPPOE cases and
> validate check for all cases.
> 
> Signed-off-by: Nannan Lu <nannan.lu at intel.com>

Applied the series