Merge pull request #54 from sourcefuse/aurora/db

Updated 'performance_insights_kms_key_id' attribute to handle default CMK usage

docs/arc-iac-docs/modules/terraform-aws-ref-arch-db/README.md

@@ -92,7 +92,6 @@ module "aurora" {
 | [random_password.aurora_db_admin_password](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/password) | resource |
 | [random_password.rds_db_admin_password](https://registry.terraform.io/providers/hashicorp/random/latest/docs/resources/password) | resource |
 | [aws_iam_policy_document.enhanced_monitoring](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/iam_policy_document) | data source |
-| [aws_kms_alias.rds](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/kms_alias) | data source |
 | [aws_partition.this](https://registry.terraform.io/providers/hashicorp/aws/latest/docs/data-sources/partition) | data source |
 
 ## Inputs
@@ -144,6 +143,7 @@ module "aurora" {
 | <a name="input_name"></a> [name](#input\_name) | ID element. Usually the component or solution name, e.g. 'app' or 'jenkins'.<br>This is the only ID element not also included as a `tag`.<br>The "name" tag is set to the full `id` string. There is no tag with the value of the `name` input. | `string` | `null` | no |
 | <a name="input_namespace"></a> [namespace](#input\_namespace) | ID element. Usually an abbreviation of your organization name, e.g. 'eg' or 'cp', to help ensure generated IDs are globally unique | `string` | n/a | yes |
 | <a name="input_performance_insights_enabled"></a> [performance\_insights\_enabled](#input\_performance\_insights\_enabled) | Whether to enable Performance Insights | `bool` | `false` | no |
+| <a name="input_performance_insights_kms_key_id"></a> [performance\_insights\_kms\_key\_id](#input\_performance\_insights\_kms\_key\_id) | The ARN for the KMS key to encrypt Performance Insights data. When specifying `performance_insights_kms_key_id`, `performance_insights_enabled` needs to be set to true | `string` | `""` | no |
 | <a name="input_performance_insights_retention_period"></a> [performance\_insights\_retention\_period](#input\_performance\_insights\_retention\_period) | Amount of time in days to retain Performance Insights data. Either 7 (7 days) or 731 (2 years) | `number` | `null` | no |
 | <a name="input_rds_enable_custom_option_group"></a> [rds\_enable\_custom\_option\_group](#input\_rds\_enable\_custom\_option\_group) | Enable the custom Option Group for restoring backups via S3 | `bool` | `false` | no |
 | <a name="input_rds_instance_allocated_storage"></a> [rds\_instance\_allocated\_storage](#input\_rds\_instance\_allocated\_storage) | The allocated storage in GBs. Required unless a snapshot\_identifier or replicate\_source\_db is provided. | `number` | `20` | no |