Checkmk Werk 14028: Update Systemd time since state changed parsing

ID: 14028 Title: Update Systemd time since state changed parsing Component: Checks & agents Level: 1 Class: Bug fix Version: 2.2.0i1 Checkmk now parsed the time a service has been in the activating/deactivating/reloading state from the status output of systemd. Correct parsing of the status information will only work after an agent update. Previous verions guessed this time based on the past state that was observed. Default parameters for warning and crit levels have been removed for activating services. So a systemd service can be indefinitely in an activating state.