Merge "Switch from SHA-1 to SHA-256 for new signing key certs." am: 574ad2ec86 am: b2e8ea51a9
am: 0684d848fb

* commit '0684d848fb70e1868ba1d1789e62c9c63066565c':
  Switch from SHA-1 to SHA-256 for new signing key certs.

Change-Id: I567818ec07e95ac9382f372d42a6aa36c4c057d0