feat: add bootstrap_cilium_loadbalancer_mode config option and default to dsr

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

bootstrap/templates/ansible/playbooks/templates/custom-cilium-helmchart.yaml.j2.j2

@@ -53,7 +53,7 @@ spec:
       {% endif %}
     loadBalancer:
       algorithm: maglev
-      mode: dsr
+      mode: {{ bootstrap_cilium_loadbalancer_mode | default('dsr', true) }}
     localRedirectPolicy: true
     operator:
       replicas: 1