`Bundle` easyblock not aware of `ignore_test_failure`

[ocaisa]

(transferring from EESSI/software-layer#1107 (comment))

In Bundle easyblock we're calling comp.test_step, we should be calling comp._test_step to make it aware of ignore_test_failure.

And may we should reconsider the naming in EasyBlock, so calling out to test_step ensures that ignore_test_failure is taken into account...

[boegel]

Yeah, we should rename the current EasyBlock.test_step to something like EasyBlock.raw_test_step, and the current EasyBlock._test_step to EasyBlock.test_step.
Then every easyblock calling out to test_step would be taking into account ignore_test_step automatically...

@ocaisa Are you up for taking a stab at that?

[Thyre]

See #4112 for a very simple fix. This currently affects the shown step name in the logs a bit.
Might be worth cleaning up as well.