[CI] Ingress creation fails when commit SHA is all integers

https://gitlab.com/gitlab-org/gl-openshift/gitlab-operator/-/jobs/1242054982

021-05-06T16:15:37.521Z ERROR controller-runtime.manager.controller.gitlab Reconciler error {"reconciler group": "apps.gitlab.com", "reconciler kind": "GitLab", "name": "gitlab", "namespace": "n37106881", "error": "Ingress.extensions "gitlab-webservice-default" is invalid: [spec.rules[0].host: Invalid value: "gitlab-%!s(int64=37106881).apps.ocp-ci-4623.k8s-ft.win": a DNS-1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is 'a-z0-9?(\.a-z0-9?)'), spec.tls[0].hosts[0]: Invalid value: "gitlab-%!s(int64=37106881).apps.ocp-ci-4623.k8s-ft.win": a DNS-1123 subdomain must consist of lower case alphanumeric characters, '-' or '.', and must start and end with an alphanumeric character (e.g. 'example.com', regex used for validation is 'a-z0-9?(\.a-z0-9?)')]"}

A potential fix would be to not explicitly set HOSTSUFFIX in CI, as test.sh will automatically use the value from NAMESPACE which now has a v prefix. Alternatively, we could add that v prefix to HOSTSUFFIX in the CI config.