ipatests: fix expected output for ipahealthcheck.meta.services
    
    ipa-healthcheck commit 31be12b introduced a change in the output
    message when pki-tomcatd is not running.
    With versions <= 0.12, the service name is displayed as
    pki_tomcatd (with an underscore), but with 0.13+ it is
    pki-tomcatd (with a dash).
    
    Fixes: https://pagure.io/freeipa/issue/9460
    
    Signed-off-by: Florence Blanc-Renaud <flo@redhat.com>
    Reviewed-By: Rob Crittenden <rcritten@redhat.com>