provision 6.x-1.8

Changes since 6.x-1.7:

• #1528996 by omega8cc - Nginx microcaching should use fastcgi_cache_valid with 1s only for upstream errors.
• Remove duplicate error_log directive in the Nginx config.
• #1534306 by omega8cc - Duplicate directives in the Nginx config cause issues with recommended Dotdeb Nginx build.
• #1472460 by dmiric and #1524738 by flexgrip - Nginx configuration denies HTTP request methods: PUT, DELETE and OPTIONS and it breaks services/REST.
• #1528996 and #1527852 by PlayfulWolf - Nginx microcaching shouldn't cache any upstream errors.
• #1524860 by omega8cc - Empty response 444 in Nginx confuses search bots.
• Update description for limit_conn in Nginx.
• Use higher values for limit_conn to avoid issues when there are many files included in the page and to better support advagg module.
• #1515762 by omega8cc - Nginx microcaching should skip all known AJAX requests.
• Provide MOBILE_DEVICE value detected/set by Nginx as accessible for PHP-FPM/Drupal backend.
• #1505370 by tribe_of_dan - Conflict between Mime Type and Document Type in Nginx.
• #1498774 by jm.federico - Set higher value for map_hash_bucket_size in Nginx by default.
• #1283854 by GuyPaddock, Steven Jones: Fixed Use of parameters in provision_file()->symlink() is incorrect.
• #1387394 by Steven Jones: Fixed deleting a site doesn't delete soft links.
• #1388542 by dsnopek: Fixed packages in sites/all/modules should override profile/*/modules.
• Use correct X-Engine header in Nginx.
• Drupal 8 compatibility in Nginx.
• Deny all known crawlers on aggregator URI in Nginx.
• Block Morfeus crawler in Nginx.
• #1486298 by Steven Jones: Fixed End of install process is messy.
• #1478984 by obrienmd - Add Access-Control-Allow-Origin header with wildcard for static files in Nginx, also to support cdn-delivered @font-face.
• Send all known bots to $args free URLs in Nginx.
• Block aggressive crawler SWEBot in the main Nginx config.
• Revert "change version information for release 1.7"

More information here: http://community.aegirproject.org/1.8