For internal Load Balancer use the same API port as external LB

[bfournie]

What type of PR is this?
/kind bug

What this PR does / why we need it:
Sets the API port used for the Internal Load Balancer to be the same as that used for the External Load Balancer.

Which issue(s) this PR fixes
Fixes #1273

TODOs:

• squashed commits
• includes documentation
• adds unit tests

Release note:

NONE

[k8s-ci-robot]

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[cpanato]

/ok-to-test

[cpanato]

/assign @damdo

/approve

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: bfournie, cpanato

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• OWNERS [cpanato]

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[richardcase]

@bfournie - this looks good. Would you be able to rebase so that we could get this in?

[damdo]

@richardcase this is rebased now, did you want to LGTM?

[richardcase]

/lgtm