enable xml linting

Help catch typos in xml files.

Bug: 28858029
Change-Id: I06c06035c7e2d02032c89ab46fd43a554aaf59aa
Reviewed-on: https://weave-review.googlesource.com/7991
Reviewed-by: Robert Ginda <rginda@google.com>
1 file changed
tree: 9d0bd6016f364abf420759d5332ea8fed382e861
  1. PREUPLOAD.cfg
  2. default.xml