Build: Fix packages distributions inclusion of empty directories

This was accidentally broken in elastic#28760.

Author: rjernst

distribution/packages/build.gradle

@@ -160,7 +160,7 @@ Closure commonPackageConfig(String type) {
     Closure copyEmptyDir = { path, u, g, mode ->
       File file = new File(path)
       into(file.parent) {
-        from "${packagingFiles}/${path}"
+        from "${packagingFiles}/${file.parent}"
         include file.name
         includeEmptyDirs true
         createDirectoryEntry true