Inlined network_external variable

Change-Id: I4cbbd84eaed99dae40c72fbdf567b480a1f268a4

ci/roles/port/defaults/main.yml

@@ -39,7 +39,6 @@ expected_fields:
   - tenant_id
   - trunk_details
   - updated_at
-network_external: true
 network_name: ansible_port_network
 no_security_groups: True
 port_name: ansible_port

ci/roles/port/tasks/main.yml

@@ -4,7 +4,7 @@
     cloud: "{{ cloud }}"
     state: present
     name: "{{ network_name }}"
-    external: "{{ network_external }}"
+    external: true
   register: network
 
 - name: Create subnet