Create a cleaner temporary request object

[yellowred]

Using Rails.application.routes.router.recognize is not safe as it updates the passed argument, which is request in our case. Specifically it updates rails_req.script_name from "" to "/" which makes request.path to have double slash in the beginning. To solve this issue it has been created a temporary clean request object which will be disposed later.

See also: https://github.com/openzipkin/zipkin-ruby/pull/122/files (PR that has the same line before).

[yellowred]

Related to this issue:
#128

[jcarres-mdsol]

@yellowred fix looks good, can you make it something like

env = {
"PATH_INFO" => env[ZipkinTracer::RackHandler::PATH_INFO], 
"REQUEST_METHOD" => env[ZipkinTracer::RackHandler::REQUEST_METHOD]
}

so we don't have long lines? Github not happy about that

[jcarres-mdsol]

Also, please update version and changelog

[ykitamura-mdsol]

Looks good to me 👍

[jcarres-mdsol]

Thanks!