Review integration tests

[mtitov]

• Start with MPI-RAPTOR on Summit

[mturilli]

• Second use case: PSI/J on Summit

[mturilli]

Suggestions:

• Use the testing framework we developed for PSI/J in the context of ExaWorks https://github.com/ExaWorks/psij-testing-service:
  . We would get reporting 'for free'
  . We would run our own instance of the dashboard on three.radical-project
  . Can we use GH actions to report via badges?

• Whatever we use if different from what used for exaworks, we should contribute back.

• Support use case (UC) MPI-RAPRTOR:
  . Write an example to use with the testing-service of ExaWorks

• UC RP-RAPTOR could be part of the existing tests for Parsl-RP integration on the official ExaWorks test service.

• Deploy our own instance of testing-service, likely privately maintained and not public.