feat: citool self-hosted runners #1825
                
     Merged
            
            
          
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Add the
RunsOnSelfHostedparameter so when creating the matrix json, it can optionally use a self-hosted runner label.Below is a summarization created by an LLM (gpt-4-0125-preview). Be mindful of hallucinations and verify accuracy.
Why
The change introduces a new optional field
RunsOnSelfHostedto theCITestConfstruct to specify whether a test runs on a self-hosted runner, enhancing flexibility and configuration options for CI tests.What
RunsOnSelfHostedfield toCITestConfstruct withyamlandjsontags, includingomitemptyfor JSON serialization. This allows specifying if a test should run on a self-hosted runner, providing more granularity in test execution environments.