[Java][apache-httpclient][feign][okhttp-gson] Enable access token refresh (#17086)

* add setter of bearer token supplier

* run generate-samples.sh

* add test of bearer auth

samples/client/echo_api/java/native/src/test/java/org/openapitools/client/api/AuthApiTest.java

@@ -49,4 +49,20 @@ public class AuthApiTest {
         // TODO: test validations
     }
     
+    /**
+     * To test HTTP bearer authentication
+     *
+     * To test HTTP bearer authentication
+     *
+     * @throws ApiException
+     *          if the Api call fails
+     */
+    @Test
+    public void testAuthHttpBearerTest() throws ApiException {
+        String response = 
+        api.testAuthHttpBearer();
+        
+        // TODO: test validations
+    }
+    
 }