Nova CI scenarios should use auto_assign_nic

https://review.openstack.org/#/c/450493/2 is better than grepping
out a net id.

Change-Id: I438c424aaf62fbf79eef77b7bcd53017285da0a9

ansible/oooq/roles/template-configs/tasks/main.yml

@@ -1,8 +1,4 @@
 ---
-- name: Get Network ID
-  shell: "source {{ ansible_env.HOME }}/overcloudrc; neutron net-list | grep {{ browbeat_pri_net_name }} | cut -f 2 -d'|'"
-  register: nova_test_net_name
-
 - name: Template Browbeat configuration
   template:
     "src={{ browbeat_config_file }} \

ansible/oooq/roles/template-configs/templates/browbeat-api-ci.yaml.j2

@@ -101,13 +101,11 @@ rally:
           file: rally/nova/nova-boot-snapshot-cc.yml
           image_name: cirros
           flavor_name: m1.tiny
-          net_id: {{ nova_test_net_name.stdout }}
         - name: boot-list
           enabled: true
           file: rally/nova/nova-boot-list-cc.yml
           image_name: cirros
           flavor_name: m1.tiny
-          net_id: {{ nova_test_net_name.stdout }}
     - name: glance
       enabled: true
       concurrency:

ansible/oooq/roles/template-configs/templates/browbeat-basic.yaml.j2

@@ -128,7 +128,6 @@ rally:
           file: rally/nova/nova-boot-snapshot-cc.yml
           image_name: cirros
           flavor_name: m1.tiny
-          net_id: {{ nova_test_net_name.stdout }}
     - name: plugins
       enabled: true
       concurrency: