Return py26 job to rally gate
Return py26 job to rally gate

Rally team would like to support py26 as long as it is possible

Change-Id: I0daff27f7ec1bb716efa5f14e02fb93acd3594f5

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