[2.3.0] Checkmk Werk 16050 created: Change default OS dashboards "Linux hosts" and "Windows hosts"

[//]: # (werk v2) # Change default OS dashboards "Linux hosts" and "Windows hosts" key | value ---------- | --- date | 2024-03-12T07:58:50+00:00 version | 2.3.0b3 class | feature edition | cee component | multisite level | 1 compatible | yes We change the default dashboards "Linux hosts" and "Windows hosts" (Monitor > Overview) to a new layout and partly to new dashboard elements. This change shall improve user experience and provide the most relevant Linux/Windows host information on these boards.