Make configuration rerolls less burdensome for users/admins

[zenmonkeykstop]

• I have searched for duplicates or related issues

Description

If a Tails-based Journalist workstation is lost or stolen, the current recommendation is to regenerate the Journalist Interface address and auth details, and to either delete the journalist's account or update its credentials. If the SVS USB is lost or stolen, the Submission Key would almost certainly need to be regenerated.

Since SecureDrop Workstation has both JI creds and the Submission Key, if an SDW is lost or stolen both types of creds would need to be updated, including for all users on other SDWs.

This process should be streamlined as much as possible to reduce admin overhead and support burden.

Potential tasks:

• Document process for re-rolling the Journalist Interface and Submission Key and securely distributing new details to workstations
• Support multiple Submission Keys #1197
• Support per-workstation Journalist Interface client auth keys.