ccache_sweeper: Add gssproxy service
The usage of the existing gssproxy service(`service/ipa-api`) leads
to undesirable for this case side effects such as auto renew of
expired credentials.
Fixes: https://pagure.io/freeipa/issue/8735
Signed-off-by: Stanislav Levin <slev@altlinux.org>
Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>