Add persistent volume support

[sagikazarmark]

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Credentials are also saved in a persistent volume (if any) which is probably not a really good practice. Might make sense to fix it in the upstream project, but for now we should support it.

Data to be stored:

• user uploaded data
• credentials
• backups

[drakkan]

Hi,

please note that credentials can be saved inside the data provider too, this is configurable, just set prefer_database_credentials to true.

Credentials are stored encrypted in any case using the configured kms provider

[sagikazarmark]

Thanks, I'll keep that in mind.

[lewis1277]

Hi, if this is worked on can you also add values for storage class?

[weironz]

hope to store the data of sftpgo in the storage volume by default.

[gioppoluca]

this is really needed