Templatize zuul: Use python*-jobs
Templatize zuul: Use python*-jobs

Use python3-jobs and python-jobs templates instead of spelling out the
jobs. This converts all python34 occurences in both check and gate, and
one python-jobs that I noticed.

Change-Id: I269a1a8ab789d95dda4b94b56f215481ce4d34a4

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