Support Net::HTTP::Persistent v4

[Meat-Chopper]

Currently HTTPI doesn't support net-http-persistent v 4.0.0. This pull request fixes it.

[olleolleolle]

When comparing version numbers, we can use Gem:: Version.new around the involved version specifiers. How do you feel about that?

[Meat-Chopper]

Thank you for the comment! It has been applied.

[rogerleite]

Hey @Meat-Chopper, thanks for the contribution and @olleolleolle for the suggestion.

Somebody, please check why CI is failing?
Don't seem related to the change you did but I don't have time to check it now.

Thanks in advance.

[olleolleolle]

Looks like:
This branch is using Rake 10.x (old). And an old code coverage library version (perhaps old).

The test failure unrelated to that, has this in there: a Puma-wrapped SSL failure.

---

/home/travis/.rvm/gems/ruby-2.7.1/gems/puma-2.3.2/lib/puma/minissl.rb:32:in `read': OpenSSL error: error:00000001:lib(0):func(0):reason(1) - 1 (Puma::MiniSSL::SSLError)

.Exception handling servers: OpenSSL error: error:00000001:lib(0):func(0):reason(1) - 1 (Puma::MiniSSL::SSLError)

---

This takes more investigation & I'm far from computers for at least 10 days.

Hope these notes help!

[olleolleolle]

@Meat-Chopper Hi again! The issue has been resolved, and if you rebase this change, you'll see the code looks a little different, now.

[coveralls]

Coverage decreased (-0.006%) to 97.068% when pulling 8482304 on Meat-Chopper:persistent_v4 into 91d2d19 on savonrb:master.

[Meat-Chopper]

Hello @olleolleolle,
The rebase has been done. Thank you for fixing CI!

[rogerleite]

Thanks @olleolleolle for fixing the CI
@Meat-Chopper thanks for the contribution

[olleolleolle]

No glory belongs to me, @c960657 fixed it!