sudo: T6926: remove spam messages to syslog

[c-po]

Right now every command that's executed via op-mode/conf-mode is logged with a session entry/exit and command execution into syslog.

sudo[1082396]:      vyos : TTY=pts/1 ; PWD=/home/vyos ; USER=root ; COMMAND=/usr/bin/mv /tmp/config.boot.1082388 /opt/vyatta/etc/config/archive/config.boot
sudo[1082396]: pam_unix(sudo:session): session opened for user root(uid=0) by vyos(uid=1002)
sudo[1082396]: pam_unix(sudo:session): session closed for user root
sudo[1082399]:      vyos : TTY=pts/1 ; PWD=/home/vyos ; USER=root ; COMMAND=/usr/sbin/logrotate -f -s /opt/vyatta/etc/config/archive/lr.state /opt/vyatta/etc/config/archive/lr.conf
sudo[1082399]: pam_unix(sudo:session): session opened for user root(uid=0) by vyos(uid=1002)
sudo[1082399]: pam_unix(sudo:session): session closed for user root

This heavily bloats remote logging services - remove the log entries

Change Summary

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Code style update (formatting, renaming)
• Refactoring (no functional changes)
• Migration from an old Vyatta component to vyos-1x, please link to related PR inside obsoleted component
• Other (please describe): remove logging noise

Related Task(s)

• https://vyos.dev/T6926

Related PR(s)

Component(s) name

sudo

Proposed changes

No longer log session information and executed script to syslog

Checklist:

• I have read the CONTRIBUTING document
• I have linked this PR to one or more Phabricator Task(s)
• I have run the components SMOKETESTS if applicable
• My commit headlines contain a valid Task id
• My change requires a change to the documentation
• I have updated the documentation accordingly

[github-actions]

👍
No issues in PR Title / Commit Title

[github-actions]

CI integration ❌ failed!

Details

CI logs

• CLI Smoketests (no interfaces) ❌ failed
• CLI Smoketests (interfaces only) ❌ failed
• Config tests ❌ failed
• RAID1 tests ❌ failed
• TPM tests ❌ failed