/usr/share/kde4/services/akonadi/davgroupware-providers/ is in kdepim-runtime 4:4.8.4-0ubuntu0.2.
This file is owned by root:root, with mode 0o755.
..
/usr/share/kde4/services/akonadi/davgroupware-providers/citadel.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/davical.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/egroupware.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/opengroupware.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/owncloud.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/scalix.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/sogo.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/yahoo.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/zarafa.desktop
/usr/share/kde4/services/akonadi/davgroupware-providers/zimbra.desktop