ci : add metal server workflows (#19293)
* ci : add metal server workflows
* cont : try fix python init
* cont : move to a separate workflow that runs only on master
* cont : fix num jobs
Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
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Co-authored-by: Sigbjørn Skjæret <sigbjorn.skjaeret@scala.com>
