TestDeployAndUpgradeAllInOnePostgres fails due to immutable migration job spec

[czeslavo]

Is there an existing issue for this?

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Problem Statement

The E2E upgrade test for Postgres all-in-one manifests () doesn't pass because of the immutable job specification. It exhibits a flaw in our upgrade path.

The Job "kong-migrations" is invalid: spec.template: Invalid value: core.PodTemplateSpec: field is immutable

Sample failure: https://github.com/Kong/kubernetes-ingress-controller/actions/runs/5108508190/jobs/9182401997

Proposed Solution

Name the migrations job so that it is unique for every released manifest version.

Additional information

No response

Acceptance Criteria

• As a user I can upgrade my Postgres-backed setup by applying all-in-one manifests without getting a Kubernetes API error rejecting changes
• TestDeployAndUpgradeAllInOnePostgres passes