feat: add id for self-hosted runner label

[erikburt]

Changes

Adds the UNIX time to the self-hosted runner label if it exists.

Motivation

We typically use runs-on=${{ github.run_id }}, but this templating doesn't work when the definition is in the YAML file. So right now we just have runs-on/....

We need to add a somewhat unique ID to this label otherwise you can experience cases where a runner that was launched for one job, is taken by another job, delaying one. This is a problem with our integration tests because we are spawning a lot of instances all at once and poaching runners can lead to delays

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DX-1176

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Below is a summarization created by an LLM (gpt-4-0125-preview). Be mindful of hallucinations and verify accuracy.

Why

The changes aim to enhance the test filtering capabilities and to introduce a new feature for dynamically modifying the RunsOnSelfHosted label based on the GitHub run ID or a timestamp, improving the traceability and specificity of test environments. This makes the CI tool more flexible and capable of handling a wider range of testing scenarios.

What

• tools/citool/cmd/filter_cmd.go
  • Imported strconv and time packages to facilitate string to integer conversion and timestamp generation.
  • Added a new function processRunsOnSelfHosted that dynamically adjusts the RunsOnSelfHosted label with either the GitHub run ID or a current timestamp, enhancing specificity and traceability.
  • Modified the filterTests function to utilize processRunsOnSelfHosted, applying the new label modification logic to each filtered test configuration.
• tools/citool/cmd/filter_cmd_test.go
  • Imported strings package to support string manipulation in tests.
  • Added TestRunsOnSelfHostedID to validate the behavior of the new processRunsOnSelfHosted function, ensuring it correctly modifies the RunsOnSelfHosted label under various conditions.