Disable unnecessary service in tempest test

Story: 2004419
Task: 28068

Change-Id: Ibe9679e1b218bdc917da0c926ce6d190daea388a

.zuul.yaml

@@ -24,7 +24,30 @@
       devstack_plugins:
         monasca-api: git://git.openstack.org/openstack/monasca-api
         monasca-log-api: git://git.openstack.org/openstack/monasca-log-api
-        monasca-tempest-plugin: git://git.openstack.org/openstack/monasca-tempest-plugin
+      devstack_services:
+        # Disable unneeded services.
+        etcd3: false
+        g-api: false
+        g-reg: false
+        n-api: false
+        n-api-meta: false
+        n-cauth: false
+        n-cond: false
+        n-cpu: false
+        n-novnc: false
+        n-obj: false
+        n-sch: false
+        placement-api: false
+        s-account: false
+        s-container: false
+        s-object: false
+        s-proxy: false
+        c-api: false
+        c-bak: false
+        c-sch: false
+        c-vol: false
+        cinder: false
+        horizon: false
     irrelevant-files:
       - ^.*\.rst$
       - ^.*\.md$