Disable default deployment of Event Hub (#433)

* Event Hub namespaces are only useful if we intend on exporting logs out of Azure

terraform/README.md

@@ -166,8 +166,8 @@ No resources.
 | <a name="input_enable_cdn_frontdoor"></a> [enable\_cdn\_frontdoor](#input\_enable\_cdn\_frontdoor) | Enable Azure CDN FrontDoor. This will use the Container Apps endpoint as the origin. | `bool` | n/a | yes |
 | <a name="input_enable_container_registry"></a> [enable\_container\_registry](#input\_enable\_container\_registry) | Set to true to create a container registry | `bool` | n/a | yes |
 | <a name="input_enable_dns_zone"></a> [enable\_dns\_zone](#input\_enable\_dns\_zone) | Conditionally create a DNS zone | `bool` | n/a | yes |
-| <a name="input_enable_event_hub"></a> [enable\_event\_hub](#input\_enable\_event\_hub) | Send Azure Container App logs to an Event Hub sink | `bool` | n/a | yes |
-| <a name="input_enable_logstash_consumer"></a> [enable\_logstash\_consumer](#input\_enable\_logstash\_consumer) | Create an Event Hub consumer group for Logstash | `bool` | n/a | yes |
+| <a name="input_enable_event_hub"></a> [enable\_event\_hub](#input\_enable\_event\_hub) | Send Azure Container App logs to an Event Hub sink | `bool` | `false` | no |
+| <a name="input_enable_logstash_consumer"></a> [enable\_logstash\_consumer](#input\_enable\_logstash\_consumer) | Create an Event Hub consumer group for Logstash | `bool` | `false` | no |
 | <a name="input_enable_monitoring"></a> [enable\_monitoring](#input\_enable\_monitoring) | Create an App Insights instance and notification group for the Container App | `bool` | n/a | yes |
 | <a name="input_environment"></a> [environment](#input\_environment) | Environment name. Will be used along with `project_name` as a prefix for all resources. | `string` | n/a | yes |
 | <a name="input_eventhub_export_log_analytics_table_names"></a> [eventhub\_export\_log\_analytics\_table\_names](#input\_eventhub\_export\_log\_analytics\_table\_names) | List of Log Analytics table names that you want to export to Event Hub | `list(string)` | `[]` | no |

terraform/variables.tf

@@ -183,11 +183,13 @@ variable "existing_network_watcher_resource_group_name" {
 variable "enable_event_hub" {
   description = "Send Azure Container App logs to an Event Hub sink"
   type        = bool
+  default     = false
 }
 
 variable "enable_logstash_consumer" {
   description = "Create an Event Hub consumer group for Logstash"
   type        = bool
+  default     = false
 }
 
 variable "eventhub_export_log_analytics_table_names" {