add leafcloud-dev tf vars file

Author: sjpb

environments/.stackhpc/tofu/LEAFCLOUD-dev.tfvars

@@ -0,0 +1,10 @@
+cluster_networks = [
+    {
+        network = "stackhpc-dev"
+        subnet = "stackhpc-dev"
+    }
+]
+control_node_flavor = "ec1.medium" # small ran out of memory, medium gets down to ~100Mi mem free on deployment
+other_node_flavor = "en1.xsmall"
+state_volume_type = "unencrypted"
+home_volume_type = "unencrypted"