Add configuration directive for RequestedAuthnContext

[pandafy]

Adding a configuration directive for RequestedAuthnContext will simplify usage and solve https://stackoverflow.com/questions/61834932/pysaml2-authncontextclassref-passwordprotectedtransport

[pandafy]

Should the necessary changes for this be made in pysaml2.src.saml2.config.Config or pysaml2.src.saml2.config.SPConfig?

[peppelinux]

Afaik SPConfig because SP Is the only entity that makes authnrequests

I've not checked the code, does It look good to you?

[pandafy]

I've not checked the code, does It look good to you?

Yes! Currently, i am just making changes here and there trying to make it work.

[peppelinux]

See tests/

We have a specific test file with all the examples to get It working