Files created by \Icinga\File\Storage\LocalFileStorage shouldn't be world readable #5383
Description
Is your feature request related to a problem? Please describe.
\Icinga\File\Storage\LocalFileStorage creates directories with the permission 2770. Files on the other hand, will use 0664.
Describe the solution you'd like
Files should be created with 0660 instead. This change should be safe, since no-one except owner and group members have directory access anyway.
Additional context
Icinga DB Web puts a user's configuration files in /var/lib/icingaweb2, by using said class, and should automatically benefit from this change.