David Shrewsbury 02b4b4c43f Add test option to use Ansible source repo
This restores the ability to run the Ansible tests using Ansible
from the source repo rather than the production version from pip.
Using production will be the default, but this sets us up to add
a new job to test against the latest dev version, if we want.

Change-Id: I93cdec653dd672acfbc03576d100d19ab8595f2e
2016-02-12 11:24:52 -05:00
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