/usr/share/gosa/plugins/ is in gosa-plugin-rolemanagement 2.7.4+reloaded2-9ubuntu1.
This file is owned by root:root, with mode 0o755.
..
/usr/share/gosa/plugins/admin/
/usr/share/gosa/plugins/admin/roleManagement/
/usr/share/gosa/plugins/admin/roleManagement/class_roleGeneric.inc
/usr/share/gosa/plugins/admin/roleManagement/class_roleManagement.inc
/usr/share/gosa/plugins/admin/roleManagement/main.inc
/usr/share/gosa/plugins/admin/roleManagement/migration/
/usr/share/gosa/plugins/admin/roleManagement/migration/class_migrate_roleRDN.inc
/usr/share/gosa/plugins/admin/roleManagement/paste_generic.tpl
/usr/share/gosa/plugins/admin/roleManagement/role-filter.xml
/usr/share/gosa/plugins/admin/roleManagement/role-list.tpl
/usr/share/gosa/plugins/admin/roleManagement/role-list.xml
/usr/share/gosa/plugins/admin/roleManagement/roleGeneric.tpl
/usr/share/gosa/plugins/admin/roleManagement/tabs_roles.inc