Add cluster to kiali fqdn

What

The merge request is changing the web_fqdn of kiali to include the cluster name. This will make it easier to identify which cluster a kiali instance is running on.

Related to component change gitlab-com/gl-infra/k8s-mgmt/components!129 (merged)

Why

Related Issue: Related Issue: https://gitlab.com/gitlab-com/gl-infra/reliability/-/issues/24159

Flux Diff:

➜  reliability git:(mchacon-kiali-gstg) ✗ flux diff kustomization reliability-components-kiali --path ./overlays/gke/gitlab-pre/us-east1/pre-gitlab-gke
✓  Kustomization diffing...
► ConfigMap/kiali-operator/reliability-overlay-kiali-values-pre-gitlab-gke drifted

data.values.yaml
  ± value change in multiline text (one insert)
      cr:
        spec:
          auth:
            strategy: "openid"
            openid:
              client_id: "1079668147158-qnt5cplbquh4n27jj6u6l97oprdfm9ah.apps.googleusercontent.com"
              disable_rbac: true
              issuer_uri: "https://accounts.google.com"
              scopes: ["openid", "email"]
              username_claim: "email"
          server:
            web_fqdn: kiali.pre-gitlab-gke.pre.gitlab.net
            web_port: 443
            web_schema: https