Added limit-rate annotation test

[SzekeresB]

What this PR does / why we need it:

Added basic test for nginx.ingress.kubernetes.io/limit-rate annotation.

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Which issue/s this PR fixes

None

How Has This Been Tested?

make FOCUS="limit-rate" kind-e2e-test

Checklist:

• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I've read the CONTRIBUTION guide
• I have added tests to cover my changes.
• All new and existing tests passed.

[k8s-ci-robot]

Hi @SzekeresB. Thanks for your PR.

I'm waiting for a kubernetes member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

I understand the commands that are listed here.

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the kubernetes/test-infra repository.

[aledbf]

/ok-to-test

[codecov-io]

Codecov Report

❗ No coverage uploaded for pull request base (master@74b617c). Click here to learn what that means.
The diff coverage is n/a.

@@            Coverage Diff            @@
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  Lines             ?     6860           
  Branches          ?        0           
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  Hits              ?     4014           
  Misses            ?     2406           
  Partials          ?      440

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[aledbf]

/lgtm
/approve

[aledbf]

@SzekeresB thanks!

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: aledbf, SzekeresB

The full list of commands accepted by this bot can be found here.

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• OWNERS [aledbf]

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