[2.4.0] Checkmk Werk 17207 created: omd update: Reintroduce Log "Verifying site configuration"

[//]: # (werk v2) # omd update: Reintroduce Log "Verifying site configuration" key | value ---------- | --- date | 2024-09-14T17:24:51+00:00 version | 2.4.0b1 class | fix edition | cre component | omd level | 1 compatible | yes Sadly, <a href="https://checkmk.com/werk/17206"> Werk #17206</a> caused a severe regression and had to be reverted, see <a href="https://checkmk.com/werk/17133"> Werk #17133</a>. This Werk reintroduces the behaviour introduced by <a href="https://checkmk.com/werk/17206"> Werk #17206</a>, but without the hanging. Here is a recapitulation of what this Werk does: If a user runs `omd update`, then the output is written to both `$OMD_ROOT/var/log/update.log` and stdout. However, the output of site configuration verification <a href="https://checkmk.com/werk/16408"> Werk #16408</a> was missing. This has been fixed.