use originalUrl for Express middleware's request url

[hgiasac]

Use req.originalUrl instead of req.url to get full path (#472 )

• Tests and linter pass
• Code coverage does not decrease (if any source code was changed)
• Appropriate docs were updated (if necessary)

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[bcoe]

This looks reasonable to me, thanks for the contribution @hgiasac 👍

[bcoe]

@ofrobots is this looking reasonable to you? seems like a good fix.

[codecov]

Codecov Report

Merging #476 into master will not change coverage.
The diff coverage is 100%.

@@           Coverage Diff           @@
##           master     #476   +/-   ##
=======================================
  Coverage   97.21%   97.21%           
=======================================
  Files          10       10           
  Lines         431      431           
  Branches       55       55           
=======================================
  Hits          419      419           
  Partials       12       12

Impacted Files	Coverage Δ
src/middleware/express/make-http-request.ts	100% <ø> (ø)	⬆️
src/middleware/express/make-middleware.ts	100% <100%> (ø)	⬆️

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[ofrobots]

strictly speaking this change is breaking for existing typescript users. However, given that the middleware is marked experimental, this is okay to ship as a non-major.