zuul: make the SRBAC job voting

There are a few tests which pass, and more are coming.

Change-Id: I6a2584d983cbb0c9d41b188822aa4a26fd9d72eb
diff --git a/.zuul.yaml b/.zuul.yaml
index 85e15bc..5e90ce8 100644
--- a/.zuul.yaml
+++ b/.zuul.yaml
@@ -25,9 +25,7 @@
         - cinder-tempest-plugin-basic-zed
         - cinder-tempest-plugin-basic-yoga
         - cinder-tempest-plugin-basic-xena
-        # Set this job to voting once we have some actual tests to run
-        - cinder-tempest-plugin-protection-functional:
-            voting: false
+        - cinder-tempest-plugin-protection-functional
     gate:
       jobs:
         - cinder-tempest-plugin-lvm-lio-barbican