Revert to using neutron-legacy based services

The patch to remove the use of the test-matrix [0] also switched from
using the neutron-legacy based service names (q-*) to the new neutron-*
names. However it turns out that the new implementation is not yet working
properly for most neutron-consuming projects, so we switch back to the
previous situation for now.

[0] https://review.openstack.org/546765

Change-Id: Id6de87211d6c4ea8fd14aa9203d8d5b17e9e2f04

.zuul.yaml

@@ -280,12 +280,20 @@
         n-sch: true
         placement-api: true
         # Neutron services
-        neutron-api: true
-        neutron-agent: true
-        neutron-dhcp: true
-        neutron-l3: true
-        neutron-metadata-agent: true
-        neutron-metering: true
+        # We need to keep using the neutron-legacy based services for
+        # now until all issues with the new lib/neutron code are solved
+        q-agt: true
+        q-dhcp: true
+        q-l3: true
+        q-meta: true
+        q-metering: true
+        q-svc: true
+        # neutron-api: true
+        # neutron-agent: true
+        # neutron-dhcp: true
+        # neutron-l3: true
+        # neutron-metadata-agent: true
+        # neutron-metering: true
         # Swift services
         s-account: true
         s-container: true