Add building Tempest timing data url

[kstrenkova]

There is a relatively new parameter added to test-operator, called TimingDataUrl. We are trying to make the parameter work with jobs, but the issue is that there is no variable that stores the final Tempest pod name that will be created. Without it, we cannot build the timing data url, as we are saving the data under job/test-name folder.

This change adds a way to build the final url for both tests with and without workflow.

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[kstrenkova]

@danpawlik Thank you for the review! It was very helpful, I even noticed one mistake I did in the logic. If you have any doubts please add comments again. It can be even nitpicks, as I am not very well versed in ansible yet I would like to learn from my mistakes :D.

[danpawlik]

Looks much better. Thank you.
I will take a look later in logs how it is working.

[kstrenkova]

Tested in testproject 1484 (not sure if I can paste internal links here). I would appreciate your reviews again @sdatko and @danpawlik, now that the code should work as expected in all scenarios:

1. When not using workflow, just set the timing data url directly in CR.
2. Timing data url in main section gets propagated to workflow steps.
3. If timing data url is directly in one step it is only added there and other steps are not affected.
4. No timing data url anywhere, no change.