This patch consumes the test scripts implemented by
https://review.openstack.org/375061 to ensure that
the tests and test preparation is consistent and
more maintainable.
Change-Id: I5ec2a2c47169e75ad2dbb801eac1732d51cdd2b8
Move to use the openstack-ansible-tests repository for Swift.
Make changes use Ansible 2.1.1 (These are required for gating to work
properly, since the majority of repositories have already changed).
Additionally, lets set this up to work with 1 infra host in the MR swift
gate to improve efficiency.
Change-Id: Ic0d35bcf8bafb90a986c7cdda3987f70580af165