NSFS | Log events to stderr when stderr logging is enabled

[naveenpaul1]

Explain the changes

1. Event are always logged to syslog(/var/log/noobaa_events.log), If customer choose to enable stderr also for logging event log should print in stderr
2. Eent json is generated from debug module, rsyslog templete is removed
3. removed syslog specific property from event, updated event log

{"timestamp":"2024-08-07T09:29:00.286Z","host":"4c8c451cfb17","event":{"code":"noobaa_started","message":"Noobaa started","description":"Noobaa started running","entity_type":"NODE","event_type":"STATE_CHANGE","scope":"NODE","severity":"INFO","state":"HEALTHY","pid":477}}

Issues: Fixed #xxx / Gap #xxx

1. NC | NSFS | Log events to stderr if stderr is enabled #8206

Testing Instructions:

1. check event are getting logged to stderr after enabling stder(LOG_TO_STDERR_ENABLED=true)

Jul-16 16:01:17.591 [/170454] [EVENT]{"code":"noobaa_account_created","message":"Account created","description":"Noobaa Account created","entity_type":"NODE","event_type":"INFO", "scope":"NODE","severity":"INFO","state":"HEALTHY","arguments":{"account":"account-test2"},"pid":170454}

• Doc added/updated
• Tests added