Add LD_LIBRARY_PATH to user env blacklist
Add LD_LIBRARY_PATH to user env blacklist

bobmaerten/dokku-buildpack-php,cachethq/cachet-buildpack,jstacoder/heroku-buildpack-php-1,jstacoder/heroku-buildpack-php-1,CHH/heroku-buildpack-php,penciu/apache,nsg/dokku-buildpack-picocms,ryosuzuki/php-buildpack,penciu/apache,penciu/apache,OKAMca/heroku-buildpack-php,AlphaStaxLLC/heroku-buildpack-php-custom,Scalingo/php-buildpack,stof/heroku-buildpack-php,bobmaerten/dokku-buildpack-php,pierredup/packager-buildpack-php,AlphaStaxLLC/heroku-buildpack-php-custom,Jonatasmz/php-buildpack,Jonatasmz/php-buildpack,nsg/dokku-buildpack-picocms,mraymond/heroku-buildpack-php,OKAMca/heroku-buildpack-php,stof/heroku-buildpack-php,stof/heroku-buildpack-php,CHH/heroku-buildpack-php,ryosuzuki/php-buildpack,Scalingo/php-buildpack,pierredup/packager-buildpack-php,CHH/heroku-buildpack-php,OKAMca/heroku-buildpack-php,AlphaStaxLLC/heroku-buildpack-php-custom,mraymond/heroku-buildpack-php,Scalingo/php-buildpack