Merge "Use 2.2.0-alpha1" into nyc-dev
am: 7cb1ec0ece

* commit '7cb1ec0ecec952d4396dc1bad6c9bbd1c00ba251':
  Use 2.2.0-alpha1

Change-Id: I826c139e2918bbf00a033dedc629a23d8a0ae1c0