Drupal Deploy process using hook_update_N on custom module for deploy

demo_deploy.install.php

function demo_deploy_update_7001() {
  # Reverting a feature should not be done in the visual interface
  # or using drush fr, but should rather be done in the hook_update_n().
  # To determine the component name (example views_view), make sure you are
  # using version 2.x of Features, and visit the page for your features.
  # In parentheses you will see the machine name for each component.
  features_revert(array(
    'demo_feature' => array(
      'views_view',
    ),
  ));
  module_enable(array(
    'new_module'
  ));
}

This helper module for D7 takes your deploy strategy one step farther and provides both feedback and the possibility of failing an update if what was attempted, did not work
https://www.drupal.org/project/hook_update_deploy_tools