Fixing ipv6-only job

Limit tests to the traffic_ops classes to avoid timeouts.
Running the traffic_ops tests ensures that the management network is
function and the load balancers are reachable with ipv4 and ipv6

Change-Id: I1dae6b829bb31f3f41cd7dec6dd9cccc4ef1adbf
Signed-off-by: Gregory Thiemonge <gthiemon@redhat.com>
diff --git a/zuul.d/jobs.yaml b/zuul.d/jobs.yaml
index ec5c623..a0ca242 100644
--- a/zuul.d/jobs.yaml
+++ b/zuul.d/jobs.yaml
@@ -601,7 +601,7 @@
             api_settings:
               api_v1_enabled: False
       tempest_concurrency: 2
-      tempest_test_regex: ^octavia_tempest_plugin.tests.scenario.v2
+      tempest_test_regex: ^octavia_tempest_plugin.tests.scenario.v2.*traffic_ops
       tox_envlist: all
     irrelevant-files:
       - ^.*\.rst$