401 errors with Fedora 3 using migrate_7x_claw

[dannylamb]

Ran into this live debugging a migration with @martha

Despite having correct credentials in the configuration form and ensuring there is no deny-apim-if-not-localhost policy floating around, we were still getting 401'd when trying to access fedora. Using both the browser and curl was successful, but for some reason the migrate framework couldn't connect.

I don't think the issue is another xacml policy. Maybe it's just how guzzle is configured? This one's a headscratcher.

[ruebot]

I was getting this a lot back pre-COVID when I was trying to test out migrate_7x_claw on a number of York collections. Had some Slack conversations with folks, and definitely walked away headscratching.