add 'no matching files' analyze result

Author: laverya

pkg/analyze/text_analyze.go

@@ -22,6 +22,18 @@ func analyzeTextAnalyze(analyzer *troubleshootv1beta1.TextAnalyze, getCollectedF
 		checkName = analyzer.CollectorName
 	}
 
+	if len(collected) == 0 {
+		return []*AnalyzeResult{
+			{
+				Title:   checkName,
+				IconKey: "kubernetes_text_analyze",
+				IconURI: "https://troubleshoot.sh/images/analyzer-icons/text-analyze.svg",
+				IsFail:  false,
+				Message: "No matching files",
+			},
+		}, nil
+	}
+
 	results := []*AnalyzeResult{}
 
 	if analyzer.RegexPattern != "" {