Add cognitoidp.admin_respond_to_auth_challenge

[matusfaro]

Implements cognitoidp.admin_respond_to_auth_challenge. It simply calls the corresponding public endpoint respond_to_auth_challenge internally as there is no relevant differences between them.

Since there are no changes in logic, I didn't add any additional tests, but I did convert existing tests so a call to admin_initiate_auth and initiate_auth uses the appropriate API admin_respond_to_auth_challenge and respond_to_auth_challenge respectively.

Let me know if there's anything I missed.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (d44d05c) 95.87% compared to head (aba0a20) 95.88%.
Report is 1 commits behind head on master.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #7136   +/-   ##
=======================================
  Coverage   95.87%   95.88%           
=======================================
  Files         834      834           
  Lines       82233    82245   +12     
=======================================
+ Hits        78844    78858   +14     
+ Misses       3389     3387    -2     

Flag	Coverage Δ
servertests	35.78% <25.00%> (-0.01%)	⬇️
unittests	95.82% <100.00%> (+0.01%)	⬆️

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[bblommers]

The region_agnostic_backend loops over all regions, over all UserPools in that region, untils it finds the region that contains the UserPool that contains the correct Session.

In the admin_respond_to_auth_challenge operation we do have access to the UserPoolId, so there is a future improvement to only loop over the regions until we have a matching UserPool (and error otherwise).

But as I said, that as an enhancement - this looks good as is.

Thank you @matusfaro!

[moto-payments-app]

Hi @matusfaro,

Thank you for contributing to Moto!

To show our thanks, we'd like to share some of the donations that we've received with you. PR's like this are the big reason that Moto is as successful as it is - so it's only fair that you, as a contributor, get to share the spoils.

We've created a companion website with more information:
https://payments.getmoto.org/

Feel free to open a bug or discussion if you run into any problems:
https://github.com/getmoto/payments

[github-actions]

This is now part of moto >= 4.2.13.dev8