Switch containerized undercloud job to nv

Unfortunately tripleo-common wasn't properly being tested in this job so
we've managed to break the job. We'll need to switch it to non-voting so
we can land the patch for now.

Change-Id: I042f2046ef951a274915bf4c29d869386b0267ea
Related-Bug: #1792892

zuul.d/undercloud-jobs.yaml

@@ -16,7 +16,6 @@
       jobs:
         - tripleo-ci-centos-7-undercloud-oooq
         - tripleo-ci-centos-7-undercloud-containers
-        - tripleo-ci-centos-7-containerized-undercloud-upgrades
 
 - job:
     name: tripleo-ci-centos-7-undercloud-containers
@@ -50,6 +49,7 @@
     parent: tripleo-ci-base-singlenode
     nodeset: single-centos-7-node
     branches: ^(?!stable/(newton|ocata|pike|queens)).*$
+    voting: false
     vars:
       environment_type: singlenode
       featureset: '050'