Put py34 first in the env order of tox
Put py34 first in the env order of tox

To solve the problem of "db type could
not be determined" on py34 we have to run first the py34 env to, then, run
py27. This patch puts py34 first on the tox.ini list of envs to avoid this
problem to happen.

Change-Id: I3aafbff30ae4d5ae6febf3e16edc428e1a6e7cab
Closes-bug: #1489059

openstack/python-scciclient,NaohiroTamura/python-scciclient