UPD: removed lookups

security_groups/main.tf

@@ -1,8 +1,11 @@
 resource "aws_security_group" "sg" {
   count       = length(var.security-groups)
-  name        = lookup(var.security-groups[count.index], "name")
+  name        = var.security-groups[count.index].name
-  description = lookup(var.security-groups[count.index], "description")
+  description = var.security-groups[count.index].description
   vpc_id      = var.vpcid
+  tags = {
+    Name = var.security-groups[count.index].name
+  }
 }
 
 // see https://www.terraform.io/docs/configuration/functions/flatten.html