/usr/share/gosa/plugins/admin/ is in gosa-plugin-gofon 2.7.4+reloaded3-3.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gosa/plugins/admin/ogroups/
/usr/share/gosa/plugins/admin/ogroups/gofon/
/usr/share/gosa/plugins/admin/ogroups/gofon/class_phonequeue.inc
/usr/share/gosa/plugins/admin/ogroups/gofon/phonequeue.tpl
/usr/share/gosa/plugins/admin/systems/
/usr/share/gosa/plugins/admin/systems/gofon/
/usr/share/gosa/plugins/admin/systems/gofon/class_phoneGeneric.inc
/usr/share/gosa/plugins/admin/systems/gofon/paste_generic.tpl
/usr/share/gosa/plugins/admin/systems/gofon/phone.tpl
/usr/share/gosa/plugins/admin/systems/gofon/phonesettings.tpl
/usr/share/gosa/plugins/admin/systems/gofon/tabs_phone.inc
/usr/share/gosa/plugins/admin/systems/services/
/usr/share/gosa/plugins/admin/systems/services/gofon/
/usr/share/gosa/plugins/admin/systems/services/gofon/class_goFonServer.inc
/usr/share/gosa/plugins/admin/systems/services/gofon/goFonServer.tpl