Add dummy service accounts to hook-image-puller and continuous-image-puller pods#3594

consideRatio merged 5 commits intojupyterhub:mainjupyterhub/zero-to-jupyterhub-k8s:mainfrom

samyuh:ft-labels-hubsamyuh/zero-to-jupyterhub-k8s:ft-labels-hubCopy head branch name to clipboard