Speed up fail rest tests

[v4lproik]

Resolves #256

Changes:

• Extracted the hardcoded retry mechanism implemented in the http Do function.
• Allows the http client to take a retry mechanism as parameter which will then be used in the Do function.
• Test time before this PR

ok  	github.com/NethermindEth/juno/pkg/rest/tests	123.929s

• Test time after this PR

ok  	github.com/NethermindEth/juno/pkg/rest/tests	5.299s

Types of changes

What types of changes does your code introduce?
Put an x in the boxes that apply

• Bugfix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to not work as expected)
• Documentation Update
• Code style update (formatting, renaming)
• Refactoring (no functional changes, no api changes)
• Build related changes
• Other (please describe):

Testing

Requires testing

• Yes
• [] No

In case you checked yes, did you write tests??

• Yes
• No

[codecov]

Codecov Report

Merging #267 (e1ffe6b) into main (64ec930) will not change coverage.
The diff coverage is 100.00%.

@@            Coverage Diff            @@
##              main      #267   +/-   ##
=========================================
  Coverage   100.00%   100.00%           
=========================================
  Files           65        65           
  Lines         5907      5919   +12     
=========================================
+ Hits          5907      5919   +12     

Flag	Coverage Δ
unittests	100.00% <100.00%> (ø)

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/feeder/feeder.go	100.00% <100.00%> (ø)
pkg/rest/rest.go	100.00% <100.00%> (ø)

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[stdevMac]

Just some coverage issues, you can take a look deeply if you look at here. Very well done work! Thanks for your contributions!

[v4lproik]

I added a test that fails when using the default client implementation and so by extension the default retry mechanism. Coverage should be ok now.

Test time is now at ok github.com/NethermindEth/juno/pkg/rest/tests 18.872s

Thanks for your message. It looks like an exciting project. I'll definitely contribute more.

[tshakalekholoane]

See comments. Otherwise great work! We appreciate your contribution.

[v4lproik]

Thanks for the review @tshakalekholoane. I also ended up extracting query url and fixing the error formatting in the handlers.

[tshakalekholoane]

Awesome, @v4lproik! Just update the baseApi variable as well to baseAPI and we should be set.