Merge pull request #8 from sourcefuse/GH-7

Added optional input variable for kms-key id

docs/arc-iac-docs/modules/terraform-aws-arc-cache/README.md

@@ -106,6 +106,7 @@ No modules.
 | <a name="input_engine_version"></a> [engine\_version](#input\_engine\_version) | Version number of the cache engine to be used for the cache clusters in this replication group | `string` | `"7.0"` | no |
 | <a name="input_evaluation_periods"></a> [evaluation\_periods](#input\_evaluation\_periods) | Number of periods over which data is compared to the specified threshold | `number` | `1` | no |
 | <a name="input_family"></a> [family](#input\_family) | Redis family | `string` | `"redis7"` | no |
+| <a name="input_kms_key_id"></a> [kms\_key\_id](#input\_kms\_key\_id) | The ARN of the key that you wish to use if encrypting at rest. If not supplied, uses service managed encryption. `at_rest_encryption_enabled` must be set to `true` | `string` | `null` | no |
 | <a name="input_log_delivery_configuration"></a> [log\_delivery\_configuration](#input\_log\_delivery\_configuration) | The log\_delivery\_configuration block allows the streaming of Redis SLOWLOG or Redis Engine Log to CloudWatch Logs or Kinesis Data Firehose. Max of 2 blocks. | `list(map(any))` | `[]` | no |
 | <a name="input_memory_alarm_description"></a> [memory\_alarm\_description](#input\_memory\_alarm\_description) | Description for the freeable memory CloudWatch alarm | `string` | `"Triggers when the available freeable memory of the Redis cluster falls below the defined threshold, indicating potential memory pressure or resource issues."` | no |
 | <a name="input_multi_az_enabled"></a> [multi\_az\_enabled](#input\_multi\_az\_enabled) | Specifies whether to enable Multi-AZ Support for the replication group | `bool` | `false` | no |