🐛Fix used scheme for fake client in List method

[mszostok]

Description

Changes proposed in this pull request:

• Really simple fix for used scheme in fake client in List method.

Background

This bug #137 was already fixed by this PR: #213. Unfortunately in this PR the bug was reintroduced - probably by mistake.

NOTE:
I also tried to change the tests to never regress but such action will complicate the test suite, so IMO is really not worth to do that. But if you think that tests coverage should be added then let's decide which types should be used and how the test suite should look like, e.g. full tests for NewFakeClientWithScheme and only one test for NewFakeClient ensuring that it's injecting the "k8s.io/apimachinery/pkg/runtime/schema.Scheme"? If the decision will be made then I can implement that too :)

Related issue

• Fake client assumes scheme.Scheme #137

[grantr]

Unfortunately in this PR the bug was reintroduced - probably by mistake.

Good catch! This may have been accidentally introduced if the code from #294 was copied from #106 (which was written before #213).
/cc @droot

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