Make pypy and python33 gates non-voting for solum project

There are couple of reviews up for deciding the REST API infrastructure for
solum. If the choice is Pecan+WSME, then this patch should get in first. These
can be turned back on once the issues related to these gates are resolved.

Part of blueprint rest-api-base

Change-Id: Ife20efaf39e59f55c0aa08f6ce01c3a4f00bb529
Merge "Make pypy and python33 gates non-voting for solum project"