hide request info for sensitive urls

[jeefy]

Hey all! This directly addresses #3012 amongst other dupes.

I created an array of URLs that we would deem "sensitive". We would therefore not log any request variables for these URLs. I've tentatively added the two login endpoints.

I also updated the tests to:

• More easily add additional cases based on URL / Method
• Ensure those URLs will log "{ contents hidden}" rather than the contents.

Critiques and comments are welcome. :)

Thanks!

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[codecov]

Codecov Report

Merging #3175 into master will increase coverage by 0.03%.
The diff coverage is 100%.

@@            Coverage Diff             @@
##           master    #3175      +/-   ##
==========================================
+ Coverage   54.52%   54.55%   +0.03%     
==========================================
  Files         565      565              
  Lines       12397    12405       +8     
==========================================
+ Hits         6759     6768       +9     
+ Misses       5376     5375       -1     
  Partials      262      262

Impacted Files	Coverage Δ
src/app/backend/handler/filter.go	37.64% <100%> (+6.47%)	⬆️
...p/backend/integration/metric/common/aggregation.go	89.23% <0%> (+1.53%)	⬆️

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[jeefy]

/assign @maciaszczykm

[jeefy]

Closing in favor of a single PR rather than two staggered PRs.