storage: fix scheme lost when use endpoint

[3pointer]

Client should choose the correct scheme when using the endpoint with scheme (http://localhost:8080). or it will return
Get https://localhost:8080/xxx: http: server gave HTTP response to HTTPS client" when client try to use NewRangeReader to read objects.

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[3pointer]

@googlebot I signed it!

[3pointer]

Hi, Is there any chance for this PR merged?

[3pointer]

Test Case Failed in

google-cloud-go/storage/storage_test.go

Lines 1285 to 1287 in e36b29a

	WantRawBasePath: "https://fake.gcs.com:8080/storage/v1",
	WantReadHost: "fake.gcs.com:8080",
	WantScheme: "http",

WantRawBasePath is https://xxx but WantScheme is http, is this test case wrong? or did I miss something?

[3pointer]

Test Case Failed in https://github.com/googleapis/google-cloud-go/blob/master/storage/storage_test.go#L1285-L1287.

WantRawBasePath is https://xxx but WantScheme is http, is this test case wrong? or did I miss something?

@ddelgrosso1 could you help me with this?

[BrennaEpp]

Hi @3pointer, thank you for filing this PR and raising this issue. We are currently looking at related issues and investigating why this is failing. I will update once we know more.

[BrennaEpp]

Hi @3pointer, I created a PR against your branch to fix the failing test. If you agree with those changes, please merge and then we can merge this in.

[BrennaEpp]

Similar changes were merged in. Thanks for your contribution! Please open an issue or reopen this request if you are still having issues.

[3pointer]

Similar changes were merged in. Thanks for your contribution! Please open an issue or reopen this request if you are still having issues.

OK, let me try.