Print current boot session log in cloud-init progress monitoring. #3907
Description
Description
/var/log/cloud-init-output.log contains the previous boot session's log.
So, it needs to start printing the log from the beginning of the current boot session.
Border of the session in /var/log/cloud-init-output.log::
LIMA 2025-08-25T15:04:03+09:00| Exiting with code 0
Cloud-init v. 25.1.4-0ubuntu0~24.04.1 finished at Mon, 25 Aug 2025 06:04:03 +0000. Datasource DataSourceNoCloud [seed=/dev/vdb]. Up 5.37 seconds
Cloud-init v. 25.1.4-0ubuntu0~24.04.1 running 'init-local' at Mon, 25 Aug 2025 06:07:19 +0000. Up 1.00 seconds.
Cloud-init v. 25.1.4-0ubuntu0~24.04.1 running 'init' at Mon, 25 Aug 2025 06:07:21 +0000. Up 2.59 seconds.