Fix remaining Terraform for production and demo

This changeset adjusts our Terraform for the production and demo environments so that the new delete_recursive_allowed with the Cloud Foundry Cloud Controller is set to false.  It also updates the shared modules to all explicitly account for this property so that we can set the flag easily.

Signed-off-by: Carlo Costino <carlo.costino@gsa.gov>

terraform/shared/sns/variables.tf

@@ -22,3 +22,9 @@ variable "monthly_spend_limit" {
   type        = number
   description = "SMS budget limit in USD. Support request must be made before raising above 1"
 }
+
+variable "delete_recursive_allowed" {
+  type        = bool
+  default     = true
+  description = "Flag for allowing resources to be recursively deleted - not recommended in production environments"
+}