change panic to fatal log

internal/helm_client/chart.go

@@ -17,7 +17,7 @@ func InstallChart(chartSpec go_helm_client.ChartSpec) {
 		logging.Log.Infof("Upgrading %s", chartSpec.ChartName)
 	}
 	if _, err := helmClient.InstallOrUpgradeChart(context.Background(), &chartSpec, nil); err != nil {
-		panic(err)
+		logging.Log.Fatal(err)
 	}
 }