Use oauth token for basic bearer auth in Rust. (#2161)

* Use oauth token for basic bearer auth in Rust.

* Add bearer_access_token instead of reusing oauth_access_token

Author: boxdot

modules/openapi-generator/src/main/resources/rust/reqwest/api.mustache

@@ -78,9 +78,16 @@ impl {{{classname}}} for {{{classname}}}Client {
         {{/isKeyInHeader}}
         {{/isApiKey}}
         {{#isBasic}}
+        {{^isBasicBearer}}
         if let Some(ref auth_conf) = configuration.basic_auth {
             req_builder = req_builder.basic_auth(auth_conf.0.to_owned(), auth_conf.1.to_owned());
         };
+        {{/isBasicBearer}}
+        {{#isBasicBearer}}
+        if let Some(ref token) = configuration.bearer_access_token {
+            req_builder = req_builder.bearer_auth(token.to_owned());
+        };
+        {{/isBasicBearer}}
         {{/isBasic}}
         {{#isOAuth}}
         if let Some(ref token) = configuration.oauth_access_token {

modules/openapi-generator/src/main/resources/rust/reqwest/configuration.mustache

@@ -8,6 +8,7 @@ pub struct Configuration {
     pub client: reqwest::Client,
     pub basic_auth: Option<BasicAuth>,
     pub oauth_access_token: Option<String>,
+    pub bearer_access_token: Option<String>,
     pub api_key: Option<ApiKey>,
     // TODO: take an oauth2 token source, similar to the go one
 }
@@ -33,6 +34,7 @@ impl Default for Configuration {
             client: reqwest::Client::new(),
             basic_auth: None,
             oauth_access_token: None,
+            bearer_access_token: None,
             api_key: None,
         }
     }