updated elasticsearch available versions

elasticsearch/azuredeploy.json

@@ -139,10 +139,11 @@
       "type": "string",
       "defaultValue": "1.5.0",
       "allowedValues": [
+        "1.5.2",
         "1.5.1",
         "1.5.0",
-        "1.4.4",
-        "1.3.8"
+        "1.4.5",
+        "1.4.4"
       ],
       "metadata": {
         "Description": "Elasticsearch version to install"