Adds four Go template tests for ingress-route.yaml covering the imported-cert secret name, multiple domains per IngressRoute, the non-traefik ingress_class guard, and the https port_map dedup when an http port_map already covers the same container port. Also adds a bats integration test that deploys a TLS-enabled app under traefik and asserts both IngressRoute manifests and live http-to-https redirect plus https serving.
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