feat: add DdApiKey dummy value for CF stack

Author: Artem Kajalainen

logs_monitoring.tf

@@ -1,8 +1,9 @@
 resource aws_cloudformation_stack "datadog-forwarder" {
   name         = "${local.stack_prefix}datadog-forwarder"
   capabilities = ["CAPABILITY_IAM", "CAPABILITY_NAMED_IAM", "CAPABILITY_AUTO_EXPAND"]
-  parameters = {
+  parameters   = {
     DdApiKeySecret = aws_secretsmanager_secret.datadog_api_key.arn
+    DdApiKey       = "dummy-value"
     DdTags         = "namespace:${var.namespace},env:${var.env}"
     ExcludeAtMatch = var.log_exclude_at_match
     FunctionName   = "${local.stack_prefix}datadog-forwarder"