Authentication params non-map flatten warning (3/3)

[willvedd]

Description

Including a warning for the unlikely event that an existing connection's authentication params are unable to be cast into a string map. This can occur because there is no validation on that configuration property and technically any valid JSON is accepted. The authentication params field, from our best understanding should strictly be a map of strings. But alas, if it is not, we should display an actionable warning to the user.

This work is enabled by #240, otherwise this logging code would be unnecessarily distributed away from the source of the code.

Checklist

Note: Checklist required to be completed before a PR is considered to be reviewable.

Auth0 Code of Conduct

• I have read and agreed to the terms within the Auth0 Code of Conduct

Auth0 General Contribution Guidelines

• I have read the Auth0 General Contribution Guidelines

Changes include test coverage?

• Yes
• Not needed

Does the description provide the correct amount of context?

• Yes, the description provides enough context for the reviewer to understand what these changes accomplish

Have you updated the documentation?

• Yes, I've updated the appropriate docs
• Not needed

Is this code ready for production?

• Yes, all code changes are intentional and no debugging calls are left over

[codecov-commenter]

Codecov Report

Merging #241 (329f1da) into flatten-connection-options-return-diag-type (e1befef) will increase coverage by 0.05%.
The diff coverage is 100.00%.

@@                               Coverage Diff                               @@
##           flatten-connection-options-return-diag-type     #241      +/-   ##
===============================================================================
+ Coverage                                        82.64%   82.70%   +0.05%     
===============================================================================
  Files                                               36       36              
  Lines                                             6853     6857       +4     
===============================================================================
+ Hits                                              5664     5671       +7     
+ Misses                                             938      936       -2     
+ Partials                                           251      250       -1     

Impacted Files	Coverage Δ
auth0/structure_auth0_connection.go	84.48% <100.00%> (+0.37%)	⬆️

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