github actions aws test

[ggabernet]

nf-core/sarek pull request

Added commit SHA to results and work directory names for each run

PR checklist

• This comment contains a description of changes (with reason)
• If you've fixed a bug or added code that should be tested, add tests!
• If necessary, also make a PR on the nf-core/sarek branch on the nf-core/test-datasets repo
• Ensure the test suite passes (nextflow run . -profile test,docker).
• Make sure your code lints (nf-core lint .).
• Documentation in docs is updated
• CHANGELOG.md is updated
• README.md is updated

Learn more about contributing: CONTRIBUTING.md

[ggabernet]

I've set the actions workflow to only run on pushes and PRs to master for now, as otherwise PRs from forks fail the tests (the secrets are not available in the env for these)