public void setJerseyEnabled(boolean jerseyEnabled) {
        this.jerseyEnabled = jerseyEnabled;
    }
a helper method to facilitate the signature change in {@link AbstractServerFactory} in release 2.1, where
the 5th {@link AdminEnvironment} param is added.
dropwizard2/src/main/java/com/linecorp/armeria/dropwizard/ArmeriaServerFactory.java