handle use case where 'existing_event_notifications_instance_crn' might be empty string

Author: ocofaigh

solutions/fully-configurable/main.tf

@@ -162,7 +162,7 @@ locals {
   secrets_manager_guid                = var.existing_secrets_manager_crn != null ? (length(local.parsed_existing_secrets_manager_crn) > 0 ? local.parsed_existing_secrets_manager_crn[7] : null) : module.secrets_manager.secrets_manager_guid
   secrets_manager_crn                 = var.existing_secrets_manager_crn != null ? var.existing_secrets_manager_crn : module.secrets_manager.secrets_manager_crn
   secrets_manager_region              = var.existing_secrets_manager_crn != null ? (length(local.parsed_existing_secrets_manager_crn) > 0 ? local.parsed_existing_secrets_manager_crn[5] : null) : module.secrets_manager.secrets_manager_region
-  enable_event_notifications          = var.existing_event_notifications_instance_crn != null ? true : false
+  enable_event_notifications          = var.existing_event_notifications_instance_crn != null || var.existing_event_notifications_instance_crn == "" ? true : false
   secret_groups_with_prefix = [
     for group in var.secret_groups : merge(group, {
       access_group_name = group.access_group_name != null ? "${local.prefix}${group.access_group_name}" : null