[feature] ability to disable logs via env

[oleg-andreyev]

{"@timestamp":"2026-03-24T18:51:56.343355+02:00","type":"syslog_json","tag":"postfix/smtpd[919]:","relayhost":"smtp-relay-86dd46b8ff-4qqgd","relayip":"127.0.0.1","logsource":"smtp-relay-86dd46b8ff-4qqgd","hostname":"smtp-relay-86dd46b8ff-4qqgd","program":"postfix","priority":"142","severity":"6","facility":"17","severity_label":"info","facility_label":"local1","message":" connect from 10-224-4-3.traefik-metrics.traefik.svc.cluster.local[10.224.4.3]","end_msg":""}

{"@timestamp":"2026-03-24T18:51:56.328316+02:00","type":"syslog_json","tag":"postfix/smtpd[903]:","relayhost":"smtp-relay-86dd46b8ff-4qqgd","relayip":"127.0.0.1","logsource":"smtp-relay-86dd46b8ff-4qqgd","hostname":"smtp-relay-86dd46b8ff-4qqgd","program":"postfix","priority":"142","severity":"6","facility":"17","severity_label":"info","facility_label":"local1","message":" NOQUEUE: lost connection after CONNECT from 10-224-2-113.traefik-metrics.traefik.svc.cluster.local[10.224.2.113]","end_msg":""}

{"@timestamp":"2026-03-24T18:51:56.328338+02:00","type":"syslog_json","tag":"postfix/smtpd[903]:","relayhost":"smtp-relay-86dd46b8ff-4qqgd","relayip":"127.0.0.1","logsource":"smtp-relay-86dd46b8ff-4qqgd","hostname":"smtp-relay-86dd46b8ff-4qqgd","program":"postfix","priority":"142","severity":"6","facility":"17","severity_label":"info","facility_label":"local1","message":" disconnect from 10-224-2-113.traefik-metrics.traefik.svc.cluster.local[10.224.2.113] commands=0/0","end_msg":""}

rsyslog is outputing to stdout:

1. it would be awesome to enable /disable logs via ENV.
2. it would be awesome to control log level