Merge pull request #674 from cloud-gov/20gb

adding in new option for 20gb sizing

Author: JasonTheMain

cloud-config/cf.yml

@@ -68,6 +68,13 @@
     cloud_properties:
       ephemeral_disk:
         size: 15360
+- type: replace
+  path: /vm_extensions/-
+  value:
+    name: 20GB_ephemeral_disk
+    cloud_properties:
+      ephemeral_disk:
+        size: 20480
 - type: replace
   path: /vm_extensions/-
   value: