A new node can run pods before its kubelet has a serving certificate, so the first exec into the job container fails with `error dialing backend: remote error: tls: internal error` and the job fails during setup.
That exec only reads the arch and PATH, so it now retries for up to a minute unless the API server rejects it (4xx) or the command ran.
Reviewed-on: https://gitea.com/gitea/runner/pulls/1337
Reviewed-by: bircni <bircni@icloud.com>
Reviewed-by: Lunny Xiao <xiaolunwen@gmail.com>
Co-authored-by: Zettat123 <39446+zettat123@noreply.gitea.com>