[CLEANUP] Moving the PipelineRun test logic from CI to Makefile and invoking them from the CI

[kaizakin]

Is there an existing feature request for this?

• I have searched the existing feature requests

Is your feature request related to a problem or use-case? Please describe.

As disscussed in #2131 (comment)

For maintainability reasons it would be better if we move the PipelineRun test logic from ci.yml to makefile and calling it from CI.

Describe the solution that you would like.

I propose creating two new make targets for the PipelineRun tests

Describe alternatives you have considered.

No response

Anything else?

No response

[kaizakin]

/assign

cc: @IrvingMg @adambkaplan