Fixes UnknownRequestType on Rails 5.1 for ActionDispatch::Request

[xprazak2]

From my debugging session:

request is ActionDispatch::Request, which is not in available_proxies and it no longer inherits from Rack::Request as correctly stated in previous discussion, it only mixes in Rack::Request::Env and Rack::Request::Helpers:

so there is no superclass match and klass.nil? #=> true

[xprazak2]

I removed ruby 2.0 and 2.1 from tests on Travis because actionpack (>= 5.0) was resolved to 5.1.4, which depends on ruby (>= 2.2.2)

[mmoll]

@mpapis @thejamespinto it would be very important for the Rails 5 migration of @theforeman that this fix goes in and a new gem release with it is crafted. ☝️

[ohadlevy]

@quirkey mind having a look? thank you!

[galois17]

@ohadlevy once I get the rights to push up the gem. I can help out...

[ohadlevy]

@galois17 - I think we can start with merging this first :) and then cut a release. who should I ping after its merged for a release?

thanks!

[ares]

Any chance this could get in anytime soon? I see @mpapis @charliesome @thejamespinto as authors of last commits, would you mind reviewing the PR?

[mpapis]

@galois17 you got the push rights on your email from GH

[galois17]

LGTM...