Make gate-glance-python34 voting and a py34 gate
Make gate-glance-python34 voting and a py34 gate

Use the python3-jobs template to get the py34 gate job.

I fixed tox -e py34 in Glance, the py34 job pass. I propose to make it
voting to avoid Python 3 regressions.

Change-Id: Ia2d2b17fc5704ed335cc96e3ce2711ff4c7da9b1

anbangr/osci-project-config,coolsvap/project-config,noorul/os-project-config,dongwenjuan/project-config,Tesora/tesora-project-config,openstack-infra/project-config,dongwenjuan/project-config,openstack-infra/project-config,noorul/os-project-config,anbangr/osci-project-config,Tesora/tesora-project-config,coolsvap/project-config