Allow adding SSH keys to worker ASGs

variables.tf

@@ -56,6 +56,7 @@ variable "workers_group_defaults" {
     asg_max_size         = "3"           # Maximum worker capacity in the autoscaling group.
     asg_min_size         = "1"           # Minimum worker capacity in the autoscaling group.
     instance_type        = "m4.large"    # Size of the workers instances.
+    key_name             = ""            # The key name that should be used for the instances in the autoscaling group
     additional_userdata  = ""            # userdata to append to the default userdata.
     ebs_optimized        = true          # sets whether to use ebs optimization on supported types.
   }