switch redis legacy tests to non-voting

In trove stable branches, switch the redis job to non-voting.

Change-Id: Ifddbb45e8d83bc20922437ca340e33ae7b514356

jenkins/jobs/projects.yaml

@@ -14931,9 +14931,13 @@
           branch-override: default
           datastore:
             - mysql
-            - redis
             - pxc
             - postgresql
+      - 'gate-trove-legacy-scenario-dsvm-{datastore}{suffix}':
+          suffix: '-nv'
+          branch-override: default
+          datastore:
+            - redis
       - 'gate-trove-scenario-dsvm-{datastore}-{group}-{node}{suffix}':
           suffix: ''
           branch-override: default

zuul/layout.yaml

@@ -18144,7 +18144,7 @@ projects:
       - gate-trove-legacy-scenario-dsvm-mysql
       - gate-trove-legacy-scenario-dsvm-postgresql
       - gate-trove-legacy-scenario-dsvm-pxc
-      - gate-trove-legacy-scenario-dsvm-redis
+      - gate-trove-legacy-scenario-dsvm-redis-nv
       - gate-trove-tox-db-fakemodetests-ubuntu-xenial
       - gate-trove-tox-db-apiexamples-ubuntu-xenial
       - gate-trove-tox-pylint-ubuntu-xenial
@@ -18156,7 +18156,6 @@ projects:
       - gate-trove-legacy-scenario-dsvm-mysql
       - gate-trove-legacy-scenario-dsvm-postgresql
       - gate-trove-legacy-scenario-dsvm-pxc
-      - gate-trove-legacy-scenario-dsvm-redis
       - gate-trove-tox-db-fakemodetests-ubuntu-xenial
       - gate-trove-tox-db-apiexamples-ubuntu-xenial
       - gate-trove-tox-pylint-ubuntu-xenial