Fixed drush_core_updatedb() calls drush cache-clear which is deprecated for D8.
Remove array('all'), it's needless for cache-rebuild
Wrap url inside drush_url so it can be switched depending on the Drupal version
Merge pull request #862 from attiks/PR856

Wrap url inside drush_url so it can be switched depending on the Drupal version
Merge pull request #855 from helmo/updb-cc-rebuild

Fixed drush_core_updatedb() calls drush cache-clear which is deprecated ...
Fix #598. Update cc menu for D8.