Add neutron trunk port scenario

Review Ica1f0a7acd521f860cebd2f92fa4dfafa90b45a2 added trunk port
testing to rally. This patch needs service_plugins = trunk in
neutron.conf on controller, for trunks to work.

Change-Id: If92e13fadd3b1dfb2c1adeb3ac326a370d84d6a2

Author: smalleni

rally/neutron/neutron-create-list-trunks.yml

@@ -0,0 +1,30 @@
+{% set subnets_per_network = subnets_per_network or 2 %}
+{% set router_create_args = router_create_args or {} %}
+{% set sla_max_avg_duration = sla_max_avg_duration or 60 %}
+{% set sla_max_failure = sla_max_failure or 0 %}
+{% set sla_max_seconds = sla_max_seconds or 60 %}
+---
+  NeutronTrunks.create_and_list_trunks:
+    -
+      args:
+        network_create_args: {}
+        subport_count: 10
+      runner:
+        type: "constant"
+        times: 100
+        concurrency: 10
+      context:
+        users:
+          tenants: 3
+          users_per_tenant: 3
+        quotas:
+          neutron:
+            network: -1
+            port: -1
+            trunk: -1
+      sla:
+        max_avg_duration: {{sla_max_avg_duration}}
+        max_seconds_per_iteration: {{sla_max_seconds}}
+        failure_rate:
+          max: {{sla_max_failure}}
+