[Hosting] Don’t perform search and replace for staging site

When creating a staging website, it appears that WPMU DEV is performing a search and replace for the original URL to the new staging URL. However, WooCommerce Subscriptions uses an a record in wp_options called wc_subscriptions_siteurl which stores the original URL. When WooCommerce Subscriptions detects that the original URL (stored in the option) is different than the site_url, it automatically activates “staging mode”. However, WPMU DEV is changing the value of wc_subscriptions_siteurl and thus “staging mode” is not activated and customers will still be automatically charged for their subscriptions (bad).