Disable all python34 jobs for stable/icehouse
Disable all python34 jobs for stable/icehouse

python34 interpreter is not installed on images that are used for
Icehouse. So there is no way any of those jobs will succeed for the
branch.

Disable them all instead of doing it per-project.

Change-Id: I146e0bd2d80b22a1270790e8c381212e36528e56

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