NRDB attribute limit check can fill the disk with logs if the values are too big (even when verbose is disabled) | Expose sensitive data

[cristianciutea]

We are logging the attribute truncate messages with warnings which can cause the log file to grow a lot when the values truncated are big.

I propose to evaluate if the log level should be changed or if we should log them just one time.

https://newrelic.atlassian.net/jira/software/c/projects/GTSE/boards/1186?modal=detail&selectedIssue=GTSE-12808

	if truncated {
		aclog.
			WithField("entity_key", entityKey.String()).
			WithField("length", metric.NRDBLimit).
			WithField("original", origValue).
			WithField("truncated", fmt.Sprintf("+%v", event)).
			Warn("event truncated to NRDB limit")
	}

Also, this can leak sensitive data.

[josemore]

This is still logged as warning, should probably be moved to debug.