Fix 6.0 install

[kemenaran]

A 6.0 install as a second instance on a Yunohost server fails when creating the admin user, with the following error:

191443 DEBUG Error: socket file "/var/tmp/mattermost_local.socket" doesn't exists, please check the server configuration for local mode

This attempts to fix the issue by putting the socket in /var/run instead, which should be writable by anyone.

[kemenaran]

!testme

[yunohost-bot]

:v:

[kemenaran]

Test fails because of the new password check, which checks that passwords that include bash escape characters are still properly handled. It seems the ynh_exec_warn_less helper doesn’t properly escape the arguments.

I’ll remove the commit improving passwords, so that we can at least merge the 6.0 fixes.

[kemenaran]

!testme

[yunohost-bot]

:carousel_horse: