Add 'export_policy_grain' state for Designate

Related: PROD-31956
Related: PROD-34126

Change-Id: I9f562c900b12cfdf33abdcbc3ba14776d6508120
diff --git a/.kitchen.yml b/.kitchen.yml
index cd2fcae..845ea20 100644
--- a/.kitchen.yml
+++ b/.kitchen.yml
@@ -15,6 +15,10 @@
   grains:
     noservices: True
   dependencies:
+    - name: keystone
+      repo: git
+      source: https://gerrit.mcp.mirantis.com/salt-formulas/keystone
+      branch: <%=ENV['GERRIT_BRANCH'] || 'master' %>
     - name: linux
       repo: git
       source: https://gerrit.mcp.mirantis.com/salt-formulas/linux