Fix tempest neutron setup tasks

1) Allow the creation of network types outside the norm of vxlan/vlan.
2) tempest_public_physical_net_type was used in the resources setup
   tasks, while it was defined in defaults as
   tempest_public_net_physical_type.
3) Consolidate the public network setup task from "if flat" and "if
   vlan" into something that will accommodate other network types
   such as local.
4) Do not require a segmentation id on private network setup,
   enabling the use of types other than vxlan/vlan.

Change-Id: I54de9862686f9c67266d4c7335f00c0553202c85

tasks/tempest_resources.yml

@@ -209,7 +209,7 @@
     openrc_path: /root/openrc
     net_name: private
     provider_network_type: "{{ tempest_private_net_provider_type }}"
-    provider_segmentation_id: "{{ tempest_private_net_seg_id }}"
+    provider_segmentation_id: "{{ tempest_private_net_seg_id | default(omit) }}"
     tenant_id: "{{ keystone_demo_tenant_id }}"
     insecure: "{{ keystone_service_internaluri_insecure }}"
   when: tempest_service_available_neutron | bool
@@ -225,36 +225,19 @@
     - tempest-setup
     - tempest-config
 
-- name: Ensure public network exists (if flat)
+- name: Ensure public network exists
   neutron:
     command: create_network
     openrc_path: /root/openrc
     net_name: public
     provider_network_type: "{{ tempest_public_net_provider_type }}"
-    provider_physical_network: "{{ tempest_public_net_physical_type }}"
+    provider_physical_network: "{{ tempest_public_net_physical_type | default(omit) }}"
-    router_external: "{{ tempest_public_router_external }}"
+    provider_segmentation_id: "{{ tempest_public_net_seg_id | default(omit) }}"
-    insecure: "{{ keystone_service_internaluri_insecure }}"
-  when:
-    - tempest_service_available_neutron | bool
-    - tempest_public_net_provider_type == "flat"
-  tags:
-    - tempest-setup
-    - tempest-config
-
-- name: Ensure public network exists (if vlan)
-  neutron:
-    command: create_network
-    openrc_path: /root/openrc
-    net_name: public
-    provider_network_type: "{{ tempest_public_net_provider_type }}"
-    provider_physical_network: "{{ tempest_public_physical_net_type }}"
-    provider_segmentation_id: "{{ tempest_public_net_seg_id }}"
     router_external: "{{ tempest_public_router_external }}"
     tenant_id: "{{ keystone_demo_tenant_id }}"
     insecure: "{{ keystone_service_internaluri_insecure }}"
   when:
     - tempest_service_available_neutron | bool
-    - tempest_public_net_provider_type == "vlan"
   tags:
     - tempest-setup
     - tempest-config