Setting ca_cert_identifier default value to null (#115)

Co-authored-by: Matteo Migliaccio <[email protected]>
Co-authored-by: cloudpossebot <[email protected]>

README.md

@@ -1,3 +1,4 @@
+
 <!-- markdownlint-disable -->
 # terraform-aws-rds [![Latest Release](https://img.shields.io/github/release/cloudposse/terraform-aws-rds.svg)](https://github.com/cloudposse/terraform-aws-rds/releases/latest) [![Slack Community](https://slack.cloudposse.com/badge.svg)](https://slack.cloudposse.com)
 <!-- markdownlint-restore -->
@@ -29,7 +30,6 @@
 
 Terraform module to provision AWS [`RDS`](https://aws.amazon.com/rds/) instances
 
-
 ---
 
 This project is part of our comprehensive ["SweetOps"](https://cpco.io/sweetops) approach towards DevOps.
@@ -59,7 +59,6 @@ We literally have [*hundreds of terraform modules*][terraform_modules] that are
 
 
 
-
 ## Introduction
 
 The module will create:
@@ -71,6 +70,7 @@ The module will create:
 * DB Security Group
 * DNS Record in Route53 for the DB endpoint
 
+
 ## Security & Compliance [<img src="https://cloudposse.com/wp-content/uploads/2020/11/bridgecrew.svg" width="250" align="right" />](https://bridgecrew.io/)
 
 Security scanning is graciously provided by Bridgecrew. Bridgecrew is the leading fully hosted, cloud-native solution providing continuous Terraform security and compliance.
@@ -229,7 +229,7 @@ Available targets:
 | <a name="input_availability_zone"></a> [availability\_zone](#input\_availability\_zone) | The AZ for the RDS instance. Specify one of `subnet_ids`, `db_subnet_group_name` or `availability_zone`. If `availability_zone` is provided, the instance will be placed into the default VPC or EC2 Classic | `string` | `null` | no |
 | <a name="input_backup_retention_period"></a> [backup\_retention\_period](#input\_backup\_retention\_period) | Backup retention period in days. Must be > 0 to enable backups | `number` | `0` | no |
 | <a name="input_backup_window"></a> [backup\_window](#input\_backup\_window) | When AWS can perform DB snapshots, can't overlap with maintenance window | `string` | `"22:00-03:00"` | no |
-| <a name="input_ca_cert_identifier"></a> [ca\_cert\_identifier](#input\_ca\_cert\_identifier) | The identifier of the CA certificate for the DB instance | `string` | `"rds-ca-2019"` | no |
+| <a name="input_ca_cert_identifier"></a> [ca\_cert\_identifier](#input\_ca\_cert\_identifier) | The identifier of the CA certificate for the DB instance | `string` | `null` | no |
 | <a name="input_context"></a> [context](#input\_context) | Single object for setting entire context at once.<br>See description of individual variables for details.<br>Leave string and numeric variables as `null` to use default value.<br>Individual variable settings (non-null) override settings in context object,<br>except for attributes, tags, and additional\_tag\_map, which are merged. | `any` | <pre>{<br>  "additional_tag_map": {},<br>  "attributes": [],<br>  "delimiter": null,<br>  "enabled": true,<br>  "environment": null,<br>  "id_length_limit": null,<br>  "label_key_case": null,<br>  "label_order": [],<br>  "label_value_case": null,<br>  "name": null,<br>  "namespace": null,<br>  "regex_replace_chars": null,<br>  "stage": null,<br>  "tags": {}<br>}</pre> | no |
 | <a name="input_copy_tags_to_snapshot"></a> [copy\_tags\_to\_snapshot](#input\_copy\_tags\_to\_snapshot) | Copy tags from DB to a snapshot | `bool` | `true` | no |
 | <a name="input_database_name"></a> [database\_name](#input\_database\_name) | The name of the database to create when the DB instance is created | `string` | n/a | yes |
@@ -309,15 +309,14 @@ Like this project? Please give it a ★ on [our GitHub](https://github.com/cloud
 Are you using this project or any of our other projects? Consider [leaving a testimonial][testimonial]. =)
 
 
+
 ## Related Projects
 
 Check out these related projects.
 
 - [terraform-aws-rds-cluster](https://github.com/cloudposse/terraform-aws-rds-cluster) - Terraform module to provision an RDS Aurora cluster for MySQL or Postgres
 - [terraform-aws-rds-cloudwatch-sns-alarms](https://github.com/cloudposse/terraform-aws-rds-cloudwatch-sns-alarms) - Terraform module that configures important RDS alerts using CloudWatch and sends them to an SNS topic
 
-
-
 ## Help
 
 **Got a question?** We got answers.

docs/terraform.md

@@ -50,7 +50,7 @@
 | <a name="input_availability_zone"></a> [availability\_zone](#input\_availability\_zone) | The AZ for the RDS instance. Specify one of `subnet_ids`, `db_subnet_group_name` or `availability_zone`. If `availability_zone` is provided, the instance will be placed into the default VPC or EC2 Classic | `string` | `null` | no |
 | <a name="input_backup_retention_period"></a> [backup\_retention\_period](#input\_backup\_retention\_period) | Backup retention period in days. Must be > 0 to enable backups | `number` | `0` | no |
 | <a name="input_backup_window"></a> [backup\_window](#input\_backup\_window) | When AWS can perform DB snapshots, can't overlap with maintenance window | `string` | `"22:00-03:00"` | no |
-| <a name="input_ca_cert_identifier"></a> [ca\_cert\_identifier](#input\_ca\_cert\_identifier) | The identifier of the CA certificate for the DB instance | `string` | `"rds-ca-2019"` | no |
+| <a name="input_ca_cert_identifier"></a> [ca\_cert\_identifier](#input\_ca\_cert\_identifier) | The identifier of the CA certificate for the DB instance | `string` | `null` | no |
 | <a name="input_context"></a> [context](#input\_context) | Single object for setting entire context at once.<br>See description of individual variables for details.<br>Leave string and numeric variables as `null` to use default value.<br>Individual variable settings (non-null) override settings in context object,<br>except for attributes, tags, and additional\_tag\_map, which are merged. | `any` | <pre>{<br>  "additional_tag_map": {},<br>  "attributes": [],<br>  "delimiter": null,<br>  "enabled": true,<br>  "environment": null,<br>  "id_length_limit": null,<br>  "label_key_case": null,<br>  "label_order": [],<br>  "label_value_case": null,<br>  "name": null,<br>  "namespace": null,<br>  "regex_replace_chars": null,<br>  "stage": null,<br>  "tags": {}<br>}</pre> | no |
 | <a name="input_copy_tags_to_snapshot"></a> [copy\_tags\_to\_snapshot](#input\_copy\_tags\_to\_snapshot) | Copy tags from DB to a snapshot | `bool` | `true` | no |
 | <a name="input_database_name"></a> [database\_name](#input\_database\_name) | The name of the database to create when the DB instance is created | `string` | n/a | yes |

variables.tf

@@ -297,7 +297,7 @@ variable "enabled_cloudwatch_logs_exports" {
 variable "ca_cert_identifier" {
   type        = string
   description = "The identifier of the CA certificate for the DB instance"
-  default     = "rds-ca-2019"
+  default     = null
 }
 
 variable "monitoring_interval" {