Remove voting flag from broken jobs

Change-Id: Idcc0ac402b9ab756a808d5539ed4903c35893154

zuul.d/devstack-tobiko-octavia.yaml

@@ -28,7 +28,7 @@
       - openstack/octavia-lib
       - openstack/python-barbicanclient
       - openstack/tripleo-image-elements
-    voting: true
+    voting: false
     vars:
       devstack_plugins:
         octavia: https://opendev.org/openstack/octavia.git

zuul.d/devstack-tobiko-ovs.yaml

@@ -27,7 +27,7 @@
     parent: devstack-tobiko
     description: |
       Base Tobiko devstack job to be used with ML2/OVS.
-    voting: true
+    voting: false
     vars: &OVS_VARS
       # TODO(fressi): restore name servers list as soon external connectivity
       # is fixed

zuul.d/devstack-tobiko.yaml

@@ -29,7 +29,7 @@
     name: devstack-tobiko
     parent: devstack
     nodeset: devstack-tobiko
-    voting: true
+    voting: false
     description: |
       Base Devstack Tobiko Plugin job.
 
@@ -152,7 +152,7 @@
     name: devstack-tobiko-multinode
     parent: devstack-tobiko
     nodeset: devstack-tobiko-multinode
-    voting: true
+    voting: false
     description: Base DevStack Tobiko job with multinode.
     pre-run: playbooks/multinode-setup.yaml
     vars: