Don't log skipping rules as errors (mindersec#1658)

Commit 0ef1926 added logging for
remediation and alert levels, but it turns out that we would even log
skipped remediations and alerts as errors which made the logs very
spammy.

Let's fix all but fatal errors.

internal/engine/executor.go

@@ -263,14 +263,22 @@ func logEval(
 	evalLog.Err(params.GetEvalErr()).Msg("result - evaluation")
 
 	// log remediation
-	logger.Err(params.GetActionsErr().RemediateErr).
+	logger.Err(filterActionErrorForLogging(params.GetActionsErr().RemediateErr)).
 		Str("action", "remediate").
 		Str("action_status", string(evalerrors.ErrorAsRemediationStatus(params.GetActionsErr().RemediateErr))).
 		Msg("result - action")
 
 	// log alert
-	logger.Err(params.GetActionsErr().AlertErr).
+	logger.Err(filterActionErrorForLogging(params.GetActionsErr().AlertErr)).
 		Str("action", "alert").
 		Str("action_status", string(evalerrors.ErrorAsAlertStatus(params.GetActionsErr().AlertErr))).
 		Msg("result - action")
 }
+
+func filterActionErrorForLogging(err error) error {
+	if evalerrors.IsActionFatalError(err) {
+		return err
+	}
+
+	return nil
+}