Merge in all doc changes from casablanca to master

Change-Id: I3c65d3f82f6bb5540e438dfd12f7f4e5c406bd19
Issue-ID: INT-748
Signed-off-by: Gary Wu <gary.i.wu@huawei.com>
diff --git a/docs/docs_usecases.rst b/docs/docs_usecases.rst
new file mode 100644
index 0000000..1d649bc
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+.. This work is licensed under a Creative Commons Attribution 4.0 International License.
+
+.. _docs_usecases:
+
+Use Cases Verified at Casablanca Release
+----------------------------------------
+
+Description
+~~~~~~~~~~~
+This session includes use cases have been tested in Casablanca release by Integration team:
+    1. How to run them
+    2. Known issues and workaround
+
+Use Cases
+~~~~~~~~~
+:ref:`vFirewall Use Case <docs_vfw>`
+
+:ref:`vLoadBalancer Use Case <docs_vlb>`
+
+:ref:`vCPE with Tosca VNF Use Case <docs_vcpe_tosca>`
+
+:ref:`vFW with HPA Use Case <docs_vfw_hpa>`
+
+:ref:`VF Module Scale Out Use Case <docs_scaleout>`
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