Expect new types of approval records from Gerrit

In Gerrit 2.8 approval types were changed from:
 CRVW became 'Code-Review'
 VRIF became 'Verifyied'
 APRV became 'Approved'

Note: Upgrade-Impact on reviews

Change-Id: I6a2cd64ace41cf1e65d4777aa249f286fe848a8a
Merge "Expect new types of approval records from Gerrit"