Add pre filter and shard counting step

[mashehu]

No description provided.

[sateeshperi]

in gpu-tests.yml, the trigger is on PR to master and those paths. should we include subworkflows too that have gpu tests ?

  pull_request:
    branches: [master]
    paths:
      - ".github/workflows/gpu-tests.yml"
      - "modules/nf-core/parabricks/**"

[mashehu]

I wouldn't at special paths just all modules and subworkflows. Then the filter step will take care of only picking up GPU tests

[sateeshperi]

why aren't some tests not launching ?

[mashehu]

they are not stalled, they are just required, but never launched (because we don't have anything to test). so we need to remove them from the ruleset and add a step which confirms the passing of all tests (either that they ran successfully or that they didn't have to be run)

[sateeshperi]

closing this as we got some of the logic in and will polish in another PR with working fixes from methylseq