Add system/extras/verity/build_verity_metadata.py  to otatools am: d26a99c3c6
am: 1e7c1290c6

* commit '1e7c1290c68263c727d20cdfffa845fea0fdc4b1':
  Add system/extras/verity/build_verity_metadata.py  to otatools

Change-Id: Ic2f9e99d76369335edc481e6f13316bb99107e8d