Fall back public_virtual_ip to ctlplane if External net not present

public_virtual_ip previously required the External network to be
present in networks data. Add a conditional to use the VIP on the
ctlplane if the External network is not in networks data.

Closes-Bug: #1774401
Change-Id: Ie6c3d7124d11ee89788b432da39df16f031fcf12

puppet/all-nodes-config.j2.yaml

@@ -200,7 +200,11 @@ resources:
                   get_param: [NetVipMap, {get_param: [ServiceNetMap, keystone_admin_api_network]}]
                 keystone_public_api_vip:
                   get_param: [NetVipMap, {get_param: [ServiceNetMap, keystone_public_api_network]}]
+{%- if 'External' in _networks %}
                 public_virtual_ip: {get_param: [NetVipMap, {get_param: ExternalNetName}]}
+{%- else %}
+                public_virtual_ip: {get_param: [NetVipMap, ctlplane]}
+{%- endif %}
                 controller_virtual_ip: {get_param: [NetVipMap, ctlplane]}
 {%- if 'InternalApi' in _networks %}
                 # the internal_api_virtual_ip is needed for contrail only
@@ -222,9 +226,14 @@ resources:
 {%- endfor %}
                 # public_virtual_ip and controller_virtual_ip are needed in
                 # both HAproxy & keepalived.
+{%- if 'External' in _networks %}
                 tripleo::haproxy::public_virtual_ip: {get_param: [NetVipMap, {get_param: ExternalNetName}]}
-                tripleo::haproxy::controller_virtual_ip: {get_param: [NetVipMap, ctlplane]}
                 tripleo::keepalived::public_virtual_ip: {get_param: [NetVipMap, {get_param: ExternalNetName}]}
+{%- else %}
+                tripleo::haproxy::public_virtual_ip: {get_param: [NetVipMap, ctlplane]}
+                tripleo::keepalived::public_virtual_ip: {get_param: [NetVipMap, ctlplane]}
+{%- endif %}
+                tripleo::haproxy::controller_virtual_ip: {get_param: [NetVipMap, ctlplane]}
                 tripleo::keepalived::controller_virtual_ip: {get_param: [NetVipMap, ctlplane]}
                 tripleo::keepalived::redis_virtual_ip: {get_param: RedisVirtualIP}
                 tripleo::redis_notification::haproxy_monitor_ip: {get_param: [NetVipMap, ctlplane]}