Add new param file for CentOS 7.4 (#324)

101-vm-linux-create/centos.7.4.azuredeploy.parameters.json

@@ -0,0 +1,17 @@
+{
+    "$schema": "http://schema.management.azure.com/schemas/2015-01-01/deploymentParameters.json#",
+    "contentVersion": "1.0.0.0",
+    "parameters": {
+        "imagePublisher": {
+            "value": "OpenLogic"
+        },
+
+        "imageOffer": {
+            "value": "CentOS"
+        },
+
+        "imageSku": {
+            "value": "7.4"
+        }
+    }
+}