[tripleo] Adding Alex Schultz as OVB core

Hi, After a discussion with Wes in Shanghai about how to make me less of a SPOF for OVB, one of the outcomes was that we should try to grow the OVB core team. Alex has been reviewing a lot of the patches to OVB lately and obviously has a good handle on how all of this stuff fits together, so I've added him to the OVB core team. Thanks and congratulations(?) Alex! :-) -Ben