Reenable the Cinder test job, it's decoupled from the Juju one now

I used the Cinder repo to test the Juju job since I was too lazy to
actually create the charm-cinder-storpool-iscsi repo... so fix that.

Change-Id: I6ce52a4680c48dc7753e6a418abc6db19da9fe7f
diff --git a/zuul.d/sp-cinder.yaml b/zuul.d/sp-cinder.yaml
index 9681015..765e13a 100644
--- a/zuul.d/sp-cinder.yaml
+++ b/zuul.d/sp-cinder.yaml
@@ -36,10 +36,9 @@
               storpool_template: virtual
               # enable_unsupported_driver: true
 
-# - project:
-#     name: openstack/cinder
-#     # name: config
-#     experimental:
-#       jobs:
-#         - cinder-storpool-tempest:
-#             branches: master
+- project:
+    name: openstack/cinder
+    experimental:
+      jobs:
+        - cinder-storpool-tempest:
+            branches: master