Update prod VM disk size to 80GB

Reviewed-on: #19

terraform/prod/terraform.tfvars

@@ -42,6 +42,15 @@ virtual_machines = {
     ip      = "192.168.1.161"
     gateway = "192.168.1.254"
     tags    = ["docker"]
+  },
+  "ipfabric" = {
+    os      = "ipfabric"
+    cores   = 16
+    memory  = 32768
+    disk_gb = 80
+    ip      = "192.168.1.162"
+    gateway = "192.168.1.254"
+    tags    = ["ipfabric"]
   }
 }