* cce: Fetch the config repository token via Secret Sync
* Keep the Secret Sync GitLab token across reboots and outages
* Install site configuration with a one-time enrollment code
* Align the itcc and dhki cases in prepare-system.sh
* Report an unreachable broker instead of a clock skew during install
* Show bridgehead check results as OK, WARN or CRIT and run them during install
* Refresh the config repo token before bridgehead check fetches
* Skip Secret Sync until the private key and root certificate exist
* Indent the case block in prepare-system.sh with tabs only
* Hide the config repo URL, token and enrollment code from other local users
* remove the unreachable second dhki case
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Co-authored-by: Martin Lablans <m.lablans@dkfz-heidelberg.de>