CE-1905: Adjust AWX job URL

The problem was when multiple IOCs were affected (on the same host) the AWX queues the processes. In that case only the first job gets an ID, and the later ones will get IDs when they are being processed. So the last part of the AWX URL could be null (if that job is still in queue).

Modified the BE to not to generate AWX URL for jobs that doesn't have AWX job ID.

Solution is deployed to DEMO environment!

The result will look something like that if the job is still in queue: