added a generated suffix so dynamic group name will be unique (#19)

Author: hyder

instance_principal.tf

@@ -16,8 +16,13 @@ resource "oci_identity_dynamic_group" "operator_instance_principal" {
 
   compartment_id = var.tenancy_id
   description    = "dynamic group to allow instances to call services for 1 operator"
+  
+  lifecycle {
+    ignore_changes = [name]
+  }
+
   matching_rule  = "ALL {instance.id = '${join(",", data.oci_core_instance.operator.*.id)}'}"
-  name           = var.label_prefix == "none" ? "operator-instance-principal" : "${var.label_prefix}-operator-instance-principal"
+  name           = var.label_prefix == "none" ? "operator-instance-principal-${substr(uuid(),0,8)}" : "${var.label_prefix}-operator-instance-principal-${substr(uuid(),0,8)}"
 
   count = var.operator_enabled == true && var.operator_instance_principal == true ? 1 : 0
 }