Ignore the time out during job completion polling

[chaitanyaenr]

@mkarg75 found out that the default time out polling for the workloads to complete is too low. Removing the time out and letting the playbook poll until the workload pod is active like how we are doing in the scale-ci-pipeline ( https://github.com/openshift-scale/scale-ci-pipeline/blob/master/jjb/dynamic/scale-ci_mastervertical.yml#L40 ) will solve this issue. This way, we need not set the time out manually.

[chaitanyaenr]

It already checks the pod status, just the poll attempts time out needs to removed: https://github.com/openshift-scale/workloads/blob/master/workloads/nodevertical.yml#L179.