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.
Closes-bug: #1489059
Change-Id: I9d3a79b865d7f3d86eca8f8dcaee598bbd917c19

muraliselva10/cloudkitty,openstack/cloudkitty,stackforge/cloudkitty,muraliselva10/cloudkitty,openstack/cloudkitty,stackforge/cloudkitty