
As described in the inline comments, this is working around a broken version of setuptools vendored by virtualenv currently. Specify in a config file that it should download the latest helper tools, rather then rely on the inbuilt versions. Add to the base-test pre-playbook; after testing we can move to the base playbook. Change-Id: Ib17017637eae81a3ff57302e7c77945f2045b5ac