Review Vaultwarden

[phillxnet]

This Rockon requires the use of a custom SSL cert. Lets move this Rock-on to the uid:gid -1 -1 spec and indicate the shares should not be readable by other given the core/security orientated nature of this Rock-on.

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N.B. ongoing changes yet to be presented/merged for this Rock-on, see:

• draft: normalise rock-ons re 'norms' #508
• final: normalise rock-ons re 'norms' #508 #523