Updates to use a hardcoded port for the kubeproxy. (Reopening #517)

[metalcycling]

Issue link

Fixes #516

What changes have been made

• Hardcoded the port number to be used when starting a local kubeproxy in the end 2 end script.

Verification steps

Ran the script on my local development machine.

Checks

• I've made sure the tests are passing.
• Testing Strategy
  • Unit tests
  • Manual tests
  • Testing is not required for this change

[openshift-ci]

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[asm582]

Reviewed with @metalcycling on Webex, LGTM