data backup tools

[mishaschwartz]

We should provide guidance, documentation, and easy to run tools that sysadmins running DACCS nodes can use to backup data.

Specifically:

• backups of user data (in jupyter workspaces and wps output directories)
• backups of published data and workflows

[mishaschwartz]

Needs clarification about what backups are required. See for discussion: https://github.com/DACCS-Climate/DACCS-executive-committee/pull/4