fix(file-and-folder-exists): Log errors differ than IsNotExist

Author: marchuk-vlad

src/csi-s3/pkg/s3/util.go

@@ -134,6 +134,10 @@ func FileExists(filename string) bool {
 	if os.IsNotExist(err) {
 		return false
 	}
+	if err != nil {
+		glog.Errorf("Error checking if file exists: %v", err)
+		return false
+	}
 	return !info.IsDir()
 }
 
@@ -142,6 +146,10 @@ func FolderExists(path string) bool {
 	if os.IsNotExist(err) {
 		return false
 	}
+	if err != nil {
+		glog.Errorf("Error checking if folder exists: %v", err)
+		return false
+	}
 	return info.IsDir()
 }