Move and fix kubeflow-periodic-v07 tests
Move and fix kubeflow-periodic-v07 tests

* The branch name had an unintentional backtick in the name
* v0.7-branch now exists on kubeflow/kfctl so that's where tests should
  be defined.

Related to: kubeflow/testing#498

cblecker/test-infra,cjwagner/test-infra,cjwagner/test-infra,BenTheElder/test-infra,BenTheElder/test-infra,BenTheElder/test-infra,monopole/test-infra,monopole/test-infra,dims/test-infra,brahmaroutu/test-infra,ixdy/kubernetes-test-infra,dims/test-infra,kubernetes/test-infra,pwittrock/test-infra,dims/test-infra,monopole/test-infra,michelle192837/test-infra,monopole/test-infra,michelle192837/test-infra,monopole/test-infra,brahmaroutu/test-infra,jessfraz/test-infra,kubernetes/test-infra,ixdy/kubernetes-test-infra,fejta/test-infra,michelle192837/test-infra,michelle192837/test-infra,dims/test-infra,pwittrock/test-infra,cjwagner/test-infra,BenTheElder/test-infra,fejta/test-infra,brahmaroutu/test-infra,jessfraz/test-infra,ixdy/kubernetes-test-infra,dims/test-infra,pwittrock/test-infra,cjwagner/test-infra,BenTheElder/test-infra,brahmaroutu/test-infra,jessfraz/test-infra,brahmaroutu/test-infra,cjwagner/test-infra,michelle192837/test-infra,jessfraz/test-infra,fejta/test-infra,cblecker/test-infra,pwittrock/test-infra,ixdy/kubernetes-test-infra,fejta/test-infra,cblecker/test-infra,kubernetes/test-infra,kubernetes/test-infra,BenTheElder/test-infra,fejta/test-infra,brahmaroutu/test-infra,pwittrock/test-infra,jessfraz/test-infra,michelle192837/test-infra,cjwagner/test-infra,cblecker/test-infra,kubernetes/test-infra,fejta/test-infra,jessfraz/test-infra,ixdy/kubernetes-test-infra,monopole/test-infra,dims/test-infra,cblecker/test-infra,cblecker/test-infra,kubernetes/test-infra