Remove the full scan_authorization_details from the unit tests

[kmcquade]

This makes the unit tests take way longer than they need to. We also have that covered by invoke integration.scan.

[kmcquade]

Well, we might want to nuke the invoke integration.scan instead. That took 7.5 minutes inside this pull request: https://github.com/salesforce/cloudsplaining/pull/113/checks?check_run_id=1210543138

[kmcquade]

Fixed by #118