apollo-mockserver/src/main/java/com/ctrip/framework/apollo/mockserver/EmbeddedApollo.java/EmbeddedApollo/mockConfigServiceUrl
class EmbeddedApollo:  private void mockConfigServiceUrl(String url) throws Exception {
    System.setProperty(ApolloClientSystemConsts.APOLLO_CONFIG_SERVICE, url);

    CONFIG_SERVICE_LOCATOR_CLEAR.invoke(CONFIG_SERVICE_LOCATOR);
  }