Fix reference to the nodes_uri param

Currently in the reclass-config.yml template we are trying to
reference an undefined variable.

This change fixes the variable and adds a test that would have caught
this issue.

Fixes PROD-13303

Change-Id: I17cd5410002b6f4172545a6946d76b7c5711a122
diff --git a/.kitchen.yml b/.kitchen.yml
index d1fff6e..3f2cfaa 100644
--- a/.kitchen.yml
+++ b/.kitchen.yml
@@ -56,4 +56,10 @@
     provisioner:
       pillars-from-files:
         reclass.sls: tests/pillar/storage_local.sls
+
+  - name: storage_nodes_uri
+    provisioner:
+      pillars-from-files:
+        reclass.sls: tests/pillar/storage_nodes_uri.sls
+
 # vim: ft=yaml sw=2 ts=2 sts=2 tw=125