1. Sync sphinx dependency with global requirements. It caps python 2 since
sphinx 2.0 no longer supports Python 2.7.
2. Remove unncessary "=="
Change-Id: I0008ca81b9c753d26ef97e10957a1745d340d2c0
This tempest plugin is being split out of the main mistral project in
accordance with Queens goal "Split Tempest Plugins into Separate
Repos/Projects"[1]. This patch applies the standard boilerplate files
for OpenStack projects so that it can stand on its own.
[1] https://governance.openstack.org/tc/goals/queens/split-tempest-plugins.html