[dts] [PATCH 0/2] split the pppoe cases

[Tu, Lijuan]

> 1.remove cvl_switch_filter_test_plan pppoe part.
> 2.add cvl_switch_filter_pppoe_test_plan for pppoe cases.
> 
> xiewei (2):
>   test_plans/cvl_switch_filter_test_plan: split the pppoe cases
>   test_plans/cvl_switch_filter_pppoe_test_plan: add new test plan

Applied, thanks