update java petstore samples

samples/client/petstore/java/jersey2-java8/src/main/java/io/swagger/client/ApiClient.java

@@ -56,6 +56,7 @@ public class ApiClient {
   protected String basePath = "http://petstore.swagger.io:80/v2";
   protected boolean debugging = false;
   protected int connectionTimeout = 0;
+  private int readTimeout = 0;
 
   protected Client httpClient;
   protected JSON json;
@@ -302,6 +303,27 @@ public class ApiClient {
     return this;
   }
 
+  /**
+   * read timeout (in milliseconds).
+   * @return Read timeout
+   */
+  public int getReadTimeout() {
+    return readTimeout;
+  }
+  
+  /**
+   * Set the read timeout (in milliseconds).
+   * A value of 0 means no timeout, otherwise values must be between 1 and
+   * {@link Integer#MAX_VALUE}.
+   * @param readTimeout Read timeout in milliseconds
+   * @return API client
+   */
+  public ApiClient setReadTimeout(int readTimeout) {
+    this.readTimeout = readTimeout;
+    httpClient.property(ClientProperties.READ_TIMEOUT, readTimeout);
+    return this;
+  }
+
   /**
    * Get the date format used to parse/format date parameters.
    * @return Date format