Make telemetry-dsvm-integration patches vote again

The failing part of the integration test was disabled until
we figured out what exactly fails and why. In the mean time,
we can take advantage of the rest of the integration tests.

Change-Id: Iaefaa06b37deb5ecf2108c027ac7db98130c8c98

.zuul.yaml

@@ -94,7 +94,6 @@
     name: telemetry-dsvm-integration
     parent: telemetry-tempest-base
     branches: ^(?!stable/(ocata|pike|queens|rocky|stein|train)).*$
-    voting: false
 
 - job:
     name: telemetry-dsvm-integration
@@ -129,13 +128,13 @@
       Telemetry devstack tempest tests job for IPv6-only deployment
     required-projects: *base_required_projects
     vars: *base_vars
-    voting: false
 
 - job:
     name: telemetry-dsvm-integration-ussuri
     parent: telemetry-dsvm-integration
     nodeset: openstack-single-node-bionic
     override-checkout: stable/ussuri
+    voting: false
 
 - job:
     name: telemetry-dsvm-integration-train