Fix expired sas token on getting job result

[ArthurKamalov]

This PR adds verification of the sas token's expiration time, to refresh it, if necessary.
fixes #553

[vxfield]

@ArthurKamalov, can you try to merge the xfield/enable-disable-scrubbing into your branch and use the new ability to disable the scrubbing of se= (example in #595).
@kikomiss: FYI

[vxfield]

@kikomiss, I've made the following changes that were causing non-deterministic behavior in the test case:

1. Submit a job to the echo-output target instead of using the latest submitted job in the workspace.
   This guarantees deterministic behavior in terms of the job's output_data_uri and we can actually test the blob being downloaded (an unknown job may no longer have its output data).

2. Using the same Regular Expression that we use to sanitize test recordings to replace the se= query string parameter with a value formatted in the same way.

I tested in two different machines that both recording mode and playback mode are working.