[Rust] Regenerate petstore sample

Author: euank

samples/client/petstore/rust/docs/UserApi.md

@@ -132,7 +132,7 @@ Get user by user name
 
 Name | Type | Description  | Notes
 ------------- | ------------- | ------------- | -------------
-  **username** | **String**| The name that needs to be fetched. Use user1 for testing.  | 
+  **username** | **String**| The name that needs to be fetched. Use user1 for testing. | 
 
 ### Return type
 

samples/client/petstore/rust/src/apis/configuration.rs

@@ -9,11 +9,24 @@
  */
 
 use hyper;
+use std::collections::HashMap;
 
 pub struct Configuration<C: hyper::client::Connect> {
   pub base_path: String,
   pub user_agent: Option<String>,
   pub client: hyper::client::Client<C>,
+
+  pub basic_auth: Option<BasicAuth>,
+  pub oauth_access_token: Option<String>,
+  pub api_key: Option<ApiKey>,
+  // TODO: take an oauth2 token source, similar to the go one
+}
+
+pub type BasicAuth = (String, Option<String>);
+
+pub struct ApiKey {
+  pub prefix: Option<String>,
+  pub key: String,
 }
 
 impl<C: hyper::client::Connect> Configuration<C> {
@@ -22,6 +35,9 @@ impl<C: hyper::client::Connect> Configuration<C> {
       base_path: "http://petstore.swagger.io/v2".to_owned(),
       user_agent: Some("Swagger-Codegen/1.0.0/rust".to_owned()),
       client: client,
+      basic_auth: None,
+      oauth_access_token: None,
+      api_key: None,
     }
   }
 }