feat: more changes to templating (#1218)

* feat: clean up more jinja default references

Signed-off-by: Devin Buhl <devin@buhl.casa>

* feat: add additional tls sans force kube-vip on k3s

Signed-off-by: Devin Buhl <devin@buhl.casa>

---------

Signed-off-by: Devin Buhl <devin@buhl.casa>

bootstrap/templates/kubernetes/apps/kube-system/cilium/app/kustomization.yaml.j2

@@ -2,7 +2,7 @@
 apiVersion: kustomize.config.k8s.io/v1beta1
 kind: Kustomization
 resources:
-  #% if not bootstrap_ipv6_enabled|default(false) %#
+  #% if not bootstrap_ipv6_enabled %#
   - ./cilium-l2.yaml
   #% endif %#
   - ./helmrelease.yaml