Reuse-port check e2e tc (config check only)

[szombi]

What this PR does / why we need it:

Add new tc which check the the reuse port nginx config.

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

How Has This Been Tested?

make FOCUS="reuse port" 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 @szombi. 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.

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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

[aledbf]

/lgtm
/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

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

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

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Needs approval from an approver in each of these files:

• OWNERS [aledbf]

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[codecov-io]

Codecov Report

Merging #5105 into master will increase coverage by 0.02%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #5105      +/-   ##
==========================================
+ Coverage   58.65%   58.68%   +0.02%     
==========================================
  Files          88       88              
  Lines        6850     6850              
==========================================
+ Hits         4018     4020       +2     
+ Misses       2391     2390       -1     
+ Partials      441      440       -1

---

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[k8s-ci-robot]

@szombi: The following tests failed, say /retest to rerun all failed tests:

Test name	Commit	Details	Rerun command
pull-ingress-nginx-e2e-1-16	0b1efdb	link	/test pull-ingress-nginx-e2e-1-16
pull-ingress-nginx-e2e-1-17	0b1efdb	link	/test pull-ingress-nginx-e2e-1-17

Full PR test history. Your PR dashboard. Please help us cut down on flakes by linking to an open issue when you hit one in your PR.

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. I understand the commands that are listed here.