vm credentials for vDC appliance 5.1.x

So, I can find plenty of documentation of the credentials that can get you into the console of the appliance for 1.5, like:

http://www.yellow-bricks.com/2012/01/26/vcloud-director-appliance-password/

But these creds root/Default0 don't work for my install, which is 5.1.x.  And when I look at the evaluation guide for the newer version, it no longer even says what the credentials should be, as it did on page 59 of the 1.5 version of that doc. 

So, what credentials will get me in?