add support for custom bird calico port

[fcgravalos]

What type of PR is this?

/kind feature

What this PR does / why we need it:
Calico v3.16 added support for custom bird port to avoid colliding with other bird daemons running on the same servers, which it's our case. We run multiple bird daemons and having this flexibility in kubespray will make our lives easier.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Does this PR introduce a user-facing change?:

Adds the ability to customize calico's bird port, via `calico_bird_listen_port` variable

[k8s-ci-robot]

Hi @fcgravalos. Thanks for your PR.

I'm waiting for a kubernetes-sigs 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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[champtar]

/lgtm

[fcgravalos]

/assign @chadswen

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: champtar, fcgravalos, floryut

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[fcgravalos]

It looks like https://gitlab.com/kargo-ci/kubernetes-sigs-kubespray/-/jobs/1136534558 failed because SSH was not available and timed out. Any chance we re-run it without running the whole test-suite?

[fcgravalos]

This also failed for reasons unrelated to my change: https://gitlab.com/kargo-ci/kubernetes-sigs-kubespray/-/jobs/1136534631