Allow user to set SecretClientOptions (#194)

* allow to set SecretClientOptions

* fix lint

Author: zhiyuanliang-ms

src/keyvault/AzureKeyVaultKeyValueAdapter.ts

@@ -80,7 +80,7 @@ export class AzureKeyVaultKeyValueAdapter implements IKeyValueAdapter {
         }
 
         if (this.#keyVaultOptions?.credential) {
-            client = new SecretClient(vaultUrl.toString(), this.#keyVaultOptions.credential);
+            client = new SecretClient(vaultUrl.toString(), this.#keyVaultOptions.credential, this.#keyVaultOptions.clientOptions);
             this.#secretClients.set(vaultUrl.host, client);
             return client;
         }

src/keyvault/KeyVaultOptions.ts

@@ -2,7 +2,7 @@
 // Licensed under the MIT license.
 
 import { TokenCredential } from "@azure/identity";
-import { SecretClient } from "@azure/keyvault-secrets";
+import { SecretClient, SecretClientOptions } from "@azure/keyvault-secrets";
 
 /**
  * Options used to resolve Key Vault references.
@@ -18,10 +18,18 @@ export interface KeyVaultOptions {
      */
     credential?: TokenCredential;
 
+    /**
+     * Configures the client options used when connecting to key vaults that have no registered SecretClient.
+     *
+     * @remarks
+     * The client options will not affect the registered SecretClient instances.
+     */
+    clientOptions?: SecretClientOptions;
+
     /**
      * Specifies the callback used to resolve key vault references that have no applied SecretClient.
      * @param keyVaultReference The Key Vault reference to resolve.
      * @returns The secret value.
      */
     secretResolver?: (keyVaultReference: URL) => string | Promise<string>;
-}
+}