feat: add bootstrap_cilium_loadbalancer_mode config option and default to dsr

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

bootstrap/vars/config.sample.yaml

@@ -47,6 +47,9 @@ bootstrap_external_ingress_addr:
 # The Load balancer IP for internal ingress, choose an available IP in your nodes network that is not being used
 bootstrap_internal_ingress_addr:
 
+# (Advanced) Cilium load balancer mode, choose either dsr or snat, if you nodes aren't on a network by themselves change this to snat
+bootstrap_cilium_loadbalancer_mode: dsr
+
 # Keep the next three options default unless you know what you are doing
 # (Advanced) Enable ipv6
 bootstrap_ipv6_enabled: false