prevent unsetting of nonexistent previous port in kubeapi-load-balancer charm

[wwwtyro]

What this PR does / why we need it: prevent unsetting of nonexistent previous port in kubeapi-load-balancer charm

Release note:

prevent unsetting of nonexistent previous port in kubeapi-load-balancer charm

[k8s-ci-robot]

Hi @wwwtyro. 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.

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[wwwtyro]

/assign @Cynerva

[Cynerva]

/ok-to-test

[Cynerva]

Ah yeah, missed this in the last review. config.previous can sometimes return None so we need to account for that here. 👍

/approve no-issue
/lgtm

[k8s-github-robot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: Cynerva, wwwtyro

Associated issue requirement bypassed by: Cynerva

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• cluster/juju/OWNERS [Cynerva]

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[k8s-github-robot]

Automatic merge from submit-queue (batch tested with PRs 48231, 47377, 48797, 49020, 49033)