fix: update bgp peer port logic

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

bootstrap/templates/kubernetes/apps/kube-system/cilium/config/cilium-l3.yaml.j2

@@ -16,9 +16,7 @@ spec:
         #% for item in bootstrap_bgp.peers %#
         - peerAddress: "#{ item }#/32"
           peerASN: #{ bootstrap_bgp.peer_asn }#
-        #% if bootstrap_bgp.peer_port %#
-          peerPort: #{ bootstrap_bgp.peer_port }#
-        #% endif %#
+          peerPort: #{ bootstrap_bgp.peer_port | default(179) }#
         #% endfor %#
         #% else %#
         #% if bootstrap_node_default_gateway %#

config.sample.yaml

@@ -85,9 +85,7 @@ bootstrap_bgp:
   #   If these match, iBGP will be used. If not, eBGP will be used.
   peer_asn: ""   # Router(s) AS
   local_asn: ""  # Node(s) AS
-  # (Optional) If using a non-default BGP port.
-  #   Default is 179 (tcp).
-  # peer_port: "" # BGP Port
+  peer_port: 179 # BGP Port - default is TCP port 179
   # (Required) The advertised CIDR for the cluster, this must NOT overlap with any
   #   existing networks and is usually a /16 (64K IPs).
   # If you want to use IPv6 check the advanced flags below