[Filebeat] Reduce log noise from unnecessary warnings

[andrewkroh]

When running under Elastic Agent, Filebeat produces a warning each time it restarts. These warnings in the log file are noisy and distracting. Filebeat should not log this warning if it is not configured to manage any Ingest Node pipelines.

{
  "@timestamp": "2023-03-21T00:52:55.512Z",
  "agent": {
    "version": "8.7.0"
  },
  "event": {
    "dataset": "elastic_agent.filebeat"
  },
  "log.level": "warn",
  "log.origin": {
    "file.line": 307,
    "file.name": "beater/filebeat.go"
  },
  "message": "Filebeat is unable to load the ingest pipelines for the configured modules because the Elasticsearch output is not configured/enabled. If you have already loaded the ingest pipelines or are using Logstash pipelines, you can ignore this warning.",
  "service.name": "filebeat"
}

Related

• [libbeat] add_cloud_metadata - startup blocked by AWS IMSDv2 token fetch #33058 (this is another very noisy warning that needs fixed)

[elasticmachine]

Pinging @elastic/elastic-agent (Team:Elastic-Agent)