Re: [PATCH v1 4/4] dts: refine pre-test setup and teardown steps

Reviewed-by: Jeremy Spewock

Re: [PATCH v1 4/4] dts: refine pre-test setup and teardown steps

Reviewed-by: Luca Vizzarro

[PATCH v1 4/4] dts: refine pre-test setup and teardown steps

The major part is the removal of _set_up_execution() and _tear_down_execution() of Node in lieu of using super() in the superclasses, which simplifies the code while achieving the same thing. The minor changes are the move of virtual devices and build target setup/teardown into SutNode from Node s