fix: use sensible default for runs-on

This new value is inline with the tags applied to the runners deployed during kayobe-automation deployment.

Author: jackhodgkiss

roles/github/README.md

@@ -40,7 +40,7 @@ The following variables can be used to make small adjustments to the composition
 
 `github_kayobe_environments`: list of environments the workflows should target. Only has effect when `github_environment_selector` is `input` or `single`.
 
-`github_runs_on`: control which runner can accept this workflow. See GitHub for more information on [runs-on](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idruns-on).
+`github_runs_on`: control which runner can accept this workflow. Default is `[kayobe, openstack]` See GitHub for more information on [runs-on](https://docs.github.com/en/actions/using-workflows/workflow-syntax-for-github-actions#jobsjob_idruns-on).
 
 `github_image_name`: name of the kayobe image defaults to `kayobe`.
 

roles/github/defaults/main.yml

@@ -5,7 +5,7 @@ github_environment_selector:
 
 github_kayobe_environments: []
 
-github_runs_on: [self-hosted]
+github_runs_on: [kayobe, openstack]
 
 github_registry: {}