What does this MR do?
Allows us (and customers) to stop writing to the
authorized_keys file since we don't use it.
Why was this MR needed?
authorized_keys file is already not used, so it is wasteful and unexpected to continue writing changes to it.
Documentation for configuring sshd to use GitLab Shell's authorized_keys command
Note: The setting's help icon links to the Tidying Up heading.
Does this MR meet the acceptance criteria?
Changelog entry added, if necessary
API support added
Added for this feature/bug
All builds are passing
Conform by the merge request performance guides
Conform by the style guides
Branch has no merge conflicts with
master(if it does - rebase it please)
Squashed related commits together
What are the relevant issue numbers?
Closes #1631 (closed)