DRAFT Develop and test script to list usernames that will get escaped differently with KubeSpawner 7's safe slug scheme

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With KubeSpawner 7, we get the safe slug scheme by default - its better and we want it, for example because it don't lead to errors of using a named server with a capital letter in the beginning. Anyhow, it impacts us because it changes how {username} gets escaped. This in turn impacts us as we mount NFS storage by declaring subPath: "{username}". To preserve previous behavior, we can change that to subPath: "{username}".

This relates to the comment in the z2jh release issue:

• z2jh changelog/migration notes

  • see a specific migration step in the end of add 'safe' slug scheme #744 (comment)
  • script to look at usernames etc considered in add 'safe' slug scheme #744 (comment) considered

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Closed in favor of upstream issue: jupyterhub/zero-to-jupyterhub-k8s#3532