k8s gate tests don't wait for the actual pods to be scheduled

[Mathieu Velten]

Currently the gate is basically just testing that the API server is answering.

Fixing by waiting for the pods to be running will make the gate a lot slower since the scheduler & controller manager use hyperkube container, which needs 30mn to be pulled in non accelerated VMs.

Let's see if the jobs don't time out before.

[Spyros Trigazis (strigazi)]

We need to check when a pod reaches the state.phase = 'Running' with a loop. The current test only checks if the pod is created, not it the pod it's running.

Here:
https://github.com/openstack/magnum/blob/master/magnum/tests/functional/python_client_base.py#L422

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/404253

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/ocata
Review: https://review.openstack.org/456508

[OpenStack Infra (hudson-openstack)]

Change abandoned by Mathieu Velten (<email address hidden>) on branch: stable/ocata
Review: https://review.openstack.org/456508

[OpenStack Infra (hudson-openstack)]

Change abandoned by Feilong Wang (<email address hidden>) on branch: master
Review: https://review.opendev.org/404253
Reason: https://docs.openstack.org/doc-contrib-guide/writing-style/code-conventions.html