Enable gate/check (with voting) for taskflow-python34
Enable gate/check (with voting) for taskflow-python34

The non-voting check has been running for about a week
now without any problems so I think it's fair to turn
it into a voting check so that the taskflow team continues
to maintain the python34 compatibility on an ongoing basis.

Change-Id: Icc080c6bb5943a69167bc70b12dc2b123097512e

noorul/os-project-config,citrix-openstack/project-config,openstack-infra/project-config,dongwenjuan/project-config,noorul/os-project-config,Tesora/tesora-project-config,anbangr/osci-project-config,Tesora/tesora-project-config,openstack-infra/project-config,citrix-openstack/project-config,coolsvap/project-config,dongwenjuan/project-config,anbangr/osci-project-config,coolsvap/project-config,open-switch/infra_project-config,open-switch/infra_project-config