As discussed in the Liberty Design Summit "Moving apps to Python 3"
cross-project workshop, the way forward in the near future is to
switch to the pure-python PyMySQL library as a default.
https://etherpad.openstack.org/p/liberty-cross-project-python3
Change-Id: Id90397af332408111f23001a16dad24b0195c595
fixtures>=0.3.14
mock>=1.0
mox3>=0.7.0
-MySQL-python
+PyMySQL>=0.6.2 # MIT License
psycopg2
oslotest>=1.5.1 # Apache-2.0
sphinx>=1.1.2,!=1.2.0,!=1.3b1,<1.3