url: do not pass WHATWG host to http.request

[tniessen]

As we explicitely state that hostname is an alias for host, we should avoid passing different (or even invalid) values for host, even if hostname is preferred. There is no reason to pass an invalid value for host to http.request().

Ref: #10638

Checklist

• make -j4 test (UNIX), or vcbuild test (Windows) passes
• commit message follows commit guidelines

Affected core subsystem(s)

url

[addaleax]

Could you explain how this is semver-minor? How does it add something to the API?

[DavidTPate]

Yeah, this doesn't appear to be a semver-minor the changes are internal and don't impact the external APIs.

[jasnell]

semver-patch is appropriate here.

[tniessen]

Sorry, my bad, must have mixed that up with another PR.

[tniessen]

CI: https://ci.nodejs.org/job/node-test-pull-request/8456/

[tniessen]

Landed in 4d89e3c.