Revert "Remove SG rule allowing ingress on all ports"

terraform/modules/spack/eks.tf

@@ -26,6 +26,17 @@ module "eks" {
     },
   ]
 
+  node_security_group_additional_rules = {
+    ingress_self_all = {
+      description = "Node to node all ports/protocols"
+      protocol    = "-1"
+      from_port   = 0
+      to_port     = 0
+      type        = "ingress"
+      self        = true
+    }
+  }
+
   node_security_group_tags = {
     # NOTE - if creating multiple security groups with this module, only tag the
     # security group that Karpenter should utilize with the following tag