Cassandra salt formula first version.
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+
+==================================
+cassandra
+==================================
+
+Service cassandra description
+
+Sample pillars
+==============
+
+Single cassandra service
+
+.. code-block:: yaml
+
+    cassandra:
+      server:
+        enabled: true
+        version: icehouse
+
+Read more
+=========
+
+* links