Checkmk Werk 7893: systemd_units: filter out disabled services from summary monitoring

ID: 7893 Title: systemd_units: filter out disabled services from summary monitoring Component: Checks & agents Level: 2 Class: Bug fix Version: 1.7.0i1 This fix solves the permanent crit status of the systemd summary checkup. Disabled (explicit & implicit) services are now excluded from the summary but still mentioned in the overall message