Closes gitlab-org/gitlab-ce#17329

Signed-off-by: Rémy Coutable <remy@rymai.me>

This reverts commit f5e87590.

Signed-off-by: Rémy Coutable <remy@rymai.me>

[ci skip]

[ci skip]

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

This reverts commit 8449979f.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

When cleaning this environment variable can be problems with the processing of non-ASCII data

This will speed up the rm-key operation. The downside is that
authorized_keys will not shrink when you remove a key. If this ever
becomes a problem it can be fixed by running 'rake gitlab:shell:setup'.

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

Signed-off-by: Dmitriy Zaporozhets <dmitriy.zaporozhets@gmail.com>

It is not clear what we need these for anymore. Because these commands
would recurse once through all existing files in all Git repositories,
and then another time through all directories these commands could
take very long on a server with a lot of repositories.

We keep the 'chmod' on config.repos_path, to deny world access to all
files and directories beneath it.

Expect broadcast message API endpoint to return 200 with empty JSON if
no broadcast messages available