Merge branch 'eero/quiet-bootstrap' into 'master'

Move bootstrapping logs from the console

Quiet the bootstrapping logs from the console.

We brought them here with https://gitlab.com/dfinity-lab/public/ic/-/merge_requests/2259
> Make the bootstrap logging script more verbose. Also, let its logs go to console -- this is hopefully a temporary measure to debug some (suspected) bootstrap failures that cannot be diagnosed otherwise as it results in network configuration failure.

We have not needed to debug bootstrap failures lately, we can bring this back if/when needed. 

See merge request dfinity-lab/public/ic!12619

Author: Bownairo

ic-os/guestos/rootfs/etc/systemd/system/bootstrap-ic-node.service

@@ -12,8 +12,6 @@ After=var-lib-ic-backup.mount
 WantedBy=multi-user.target
 
 [Service]
-StandardOutput=journal+console
-StandardError=journal+console
 Type=oneshot
 RemainAfterExit=true
 ExecStart=/opt/ic/bin/bootstrap-ic-node.sh