/usr/share/gosa/locale/ is in gosa-plugin-opsi 2.7.4+reloaded2-13+deb9u1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gosa/locale/plugins/
/usr/share/gosa/locale/plugins/opsi/
/usr/share/gosa/locale/plugins/opsi/locale/
/usr/share/gosa/locale/plugins/opsi/locale/de/
/usr/share/gosa/locale/plugins/opsi/locale/de/LC_MESSAGES/
/usr/share/gosa/locale/plugins/opsi/locale/de/LC_MESSAGES/messages.po
/usr/share/gosa/locale/plugins/opsi/locale/fr/
/usr/share/gosa/locale/plugins/opsi/locale/fr/LC_MESSAGES/
/usr/share/gosa/locale/plugins/opsi/locale/fr/LC_MESSAGES/messages.po
/usr/share/gosa/locale/plugins/opsi/locale/messages.po
/usr/share/gosa/locale/plugins/opsi/locale/pt_BR/
/usr/share/gosa/locale/plugins/opsi/locale/pt_BR/LC_MESSAGES/
/usr/share/gosa/locale/plugins/opsi/locale/pt_BR/LC_MESSAGES/messages.po