Expand the `inspect.py` script about domain-scan

[konklone]

This process is best suited for the data loading process in 18f/pulse, not domain scanning. That's already where branch determination logic takes place, and where Agency and Branch are subsequently associated with each domain.

The a11y scanning process should have a11y.py do all necessary work (calling out to pa11y as needed, and synthesizing fields as needed) to produce 1 or more rows' worth of data about a hostname. The Pulse data loading process can then read in that data, associate it with the proper branch and agency, and store the data in Pulse's database alongside HTTPS and DAP data.

The link you put in to inspect.py (https://github.com/18F/domain-scan/blob/make-lambda-optional/scanners/inspect.py) is from a non-master branch (the master version is identical). But more importantly, inspect.py is no longer used. We now use pshtt.py, which makes use of pshtt, an open source collaboration between DHS and GSA. However, as far as I can tell, you shouldn't need to make any changes to pshtt to support the a11y work.

[gbinal]

Thanks - you're right. Closing out.