MB-100: CbrecoveryTests

- Fix Autofailover test cases

Change-Id: Ib14b8deb3132951fa9bb6314a6cc2d10dd62ac25
Reviewed-on: http://review.couchbase.org/27152
Reviewed-by: abhinav dangeti <abhinav.dangeti@gmail.com>
Tested-by: abhinav dangeti <abhinav.dangeti@gmail.com>