Add support for additional awskms parameters (#1468)

This updates to the latest go-kms-wrapping tag to support these
parameters and documents them.

website/content/docs/configuration/kms/awskms.mdx

@@ -38,20 +38,38 @@ These parameters apply to the `kms` stanza in the Boundary configuration file:
   `AWS_DEFAULT_REGION` environment variables, from your `~/.aws/config` file,
   or from instance metadata.
 
-- `access_key` `(string: <required>)`: The AWS access key ID to use. May also be
+- `kms_key_id` `(string: <required>)`: The AWS KMS key ID to use for encryption
+  and decryption. May also be specified by the `AWSKMS_WRAPPER_KEY_ID`
+  environment variable.
+
+- `access_key` `(string: "")`: The AWS access key ID to use. May also be
   specified by the `AWS_ACCESS_KEY_ID` environment variable or as part of the
   AWS profile from the AWS CLI or instance profile.
 
 - `session_token` `(string: "")`: Specifies the AWS session token. This can
   also be provided via the environment variable `AWS_SESSION_TOKEN`.
 
-- `secret_key` `(string: <required>)`: The AWS secret access key to use. May
+- `secret_key` `(string: "")`: The AWS secret access key to use. May
   also be specified by the `AWS_SECRET_ACCESS_KEY` environment variable or as
   part of the AWS profile from the AWS CLI or instance profile.
 
-- `kms_key_id` `(string: <required>)`: The AWS KMS key ID to use for encryption
-  and decryption. May also be specified by the `AWSKMS_WRAPPER_KEY_ID`
-  environment variable.
+- `shared_creds_filename` `(string: "")`: (Boundary 0.5.1+) If set, the file
+  name to read as a shared credentials file.
+
+- `shared_creds_profile` `(string: "")`: (Boundary 0.5.1+) If set, the
+  profile to use from the shared credentials file. If not set, will use the
+  `AWS_PROFILE` env var, or if that is not set, `"default"`.
+
+- `role_arn` `(string: "")`: (Boundary 0.5.1+) If this and
+  `web_identity_token_file` are set, the role ARN to use when using a web
+  identity role provider with STS.
+
+- `web_identity_token_file` `(string: "")`: (Boundary 0.5.1+) If this and
+  `role_arn` are set, the token file to use when using a web identity role
+  provider with STS.
+
+- `role_session_name` `(string: "")`: (Boundary 0.5.1+) If using the web
+  identity role provider, the role session to use.
 
 - `endpoint` `(string: "")`: The KMS API endpoint to be used to make AWS KMS
   requests. May also be specified by the `AWS_KMS_ENDPOINT` environment