fix: Update user agent calls to KMS (#205)

We want to identify which implementation of the AWS Encryption SDK
is being used in order to assist in any requests from customers
or for debugging as necessary by developers.
We plan to utilize the user agent set by the SDK to achieve this.

This identification is done in the default clientProvider.
Users can create their own clientProvider,
and set a different user agent.

Author: seebees

modules/kms-keyring-browser/src/kms_keyring_browser.ts

@@ -36,7 +36,7 @@ import {
 } from '@aws-crypto/material-management-browser'
 import { KMS } from 'aws-sdk' // eslint-disable-line no-unused-vars
 
-const getKmsClient = getClient(KMS)
+const getKmsClient = getClient(KMS, { customUserAgent: 'AwsEncryptionSdkJavascriptBrowser' })
 const cacheKmsClients = cacheClients(getKmsClient)
 
 export type KmsKeyringWebCryptoInput = Partial<KmsKeyringInput<KMS>>

modules/kms-keyring-node/src/kms_keyring_node.ts

@@ -29,7 +29,7 @@ import {
   immutableClass, KeyringNode
 } from '@aws-crypto/material-management-node'
 import { KMS } from 'aws-sdk' // eslint-disable-line no-unused-vars
-const getKmsClient = getClient(KMS)
+const getKmsClient = getClient(KMS, { customUserAgent: 'AwsEncryptionSdkJavascriptNodejs' })
 const cacheKmsClients = cacheClients(getKmsClient)
 
 export type KmsKeyringNodeInput = Partial<KmsKeyringInput<KMS>>