See RedHat bug for reasons why the ddate is cleaned up. The reference is
where to get the command in future.
Addresses: https://bugzilla.redhat.com/show_bug.cgi?id=823156
References: https://github.com/bo0ts/ddate
Acked-by: Petr Uzel <petr.uzel@suse.cz>
Signed-off-by: Sami Kerola <kerolasa@iki.fi>
Signed-off-by: Karel Zak <kzak@redhat.com>