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

* commit 'b2e8ea51a9200af1c7ff7aa75f2fc0e3cf6e6843':
  Switch from SHA-1 to SHA-256 for new signing key certs.

Change-Id: Ieb51183816a46c7697ccbcf9854ce485e885abb1