downloadunpacked: add top_location key

slapos/recipe/downloadunpacked.py

@@ -55,7 +55,8 @@ class Recipe:
         if not shared_part:
           raise ValueError(
             " Set ${buildout:shared-part} for shared feature")
-        shared = os.path.join(shared_part.strip().rstrip('/'), name)
+        top_location = options.get('top_location', '')
+        shared = os.path.join(shared_part.strip().rstrip('/'), top_location, name)
         if not os.path.exists(shared):
           os.makedirs(shared)
         self._debug_signature_text = []