[test-operator] Move away from Jobs to Pods

[lpiwowar]

With this PR [1] the test operator dropped the usage of OCP Jobs for spawning of the test pods.

This change updates the test-operator role so that it works with the new version of the test-operator that spawns test pods directly through the OCP Pods object.

[1] openstack-k8s-operators/test-operator#266

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[openshift-ci]

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[lpiwowar]

/hold

These PRs need to be merged at the same time. The idea is to first get /approved and /lgtm for both of them and then remove /hold at the same time:

• Move away from Jobs to Pods  test-operator#266
• [test-operator] Move away from Jobs to Pods #2664