[BGP+AmphoraLBs] Fix network configuration

Amphora LBs did not work properly with BGP.
With this change, network configuration is modified to configure
properly octavia NAD.

OSPRH-10768

Author: eduolivares

roles/ci_gen_kustomize_values/templates/bgp_dt01/network-values/values.yaml.j2

@@ -130,11 +130,13 @@ data:
         "isDefaultGateway": true,
         "isGateway": true,
         "forceAddress": false,
+{%  if network.network_name == "ctlplane" %}
         "ipMasq": true,
+{%  else %}
+        "ipMasq": false,
+{%  endif %}
         "hairpinMode": true,
-{%  if network.network_name == "octavia" %}
-        "bridge": "octbr",
-{%  elif network.network_name == "ctlplane" %}
+{%  if network.network_name == "ctlplane" %}
         "bridge": "ospbr",
 {%  else %}
         "bridge": "{{ network.network_name }}",