test_install: restart services after date change
    
    The test TestKRAinstallAfterCertRenew is moving the
    date in the future in order to reach the grace period where
    certmonger detects some certificates need to be renewed.
    Restart the services after the date change.
    
    Fixes: https://pagure.io/freeipa/issue/9405
    
    Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Michal Polovka <mpolovka@redhat.com>