Import media world-readable

In the absence of extensions,
libarchive assumes ISO content
is private. Always make content
world readable for the sake of
confluent-public serving.

confluent_server/confluent/osimage.py

@@ -175,6 +175,10 @@ def extract_entries(entries, flags=0, callback=None, totalsize=None, extractlist
                     break
                 write_data_block(write_p, buff, size, offset)
             write_finish_entry(write_p)
+            if os.path.isdir(str(entry)):
+                os.chmod(str(entry), 0o755)
+            else:
+                os.chmod(str(entry), 0o644)
     if callback:
         callback({'progress': float(sizedone) / float(totalsize)})