update buildpack-env-dir tests
update buildpack-env-dir tests

mmgm/nodejs-buildpack,kauffecup/nodejs-buildpack,simonjjones/snowedjs_buildpack,marnold6/nodejs_buildpack,kevinSuttle/heroku-buildpack-nodejs,rainum/heroku-buildpack-nodejs-grunt-compass,yaditya/heroku-buildpack-nodejs-gulp-haml-sass-compass,hpcloud/nodejs-buildpack,tastemade/heroku-buildpack-nodejs-grunt-compass,mpirik/heroku-buildpack-nodejs-grunt-compass,ks2software/nodejs-buildpack,cloudfoundry/nodejs-buildpack,davious/heroku-buildpack-nodejs-grunt-compass,appstack/heroku-buildpack-nodejs-gulp,ks2software/nodejs-buildpack,mrc535s/wkhtmltopdfbp,circuithub/heroku-buildpack-nodejs-new,jasonswett/heroku-buildpack-nodejs-gulp-bower,ks2software/nodejs-buildpack,andrewbranch/heroku-buildpack-nodejs-ember,dam4222/heroku-buildpack-nodejs-gulp,pivotal-topher-bullock/lamby-js-buildpack,danielgranat/heroku-buildpack-nodejs-grunt,sky-uk/heroku-buildpack-nodejs-grunt-compass,bagelswitch/buildpack-nodejs,roder/nodejs-buildpack,gfguthrie/heroku-buildpack-bower-grunt,pkumar-appd/nodejs-buildpack,cloudfoundry/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack,aarongray/heroku-buildpack-nodejs-gulp-bower,nemesiscodex/heroku-buildpack-nodejs,Ferrari/heroku-buildpack-nodejs,mmgm/nodejs-buildpack,totapari/heroku-buildpack-nodejs,djng/heroku-buildpack-webapp-client,robgraeber/heroku-buildpack-nodejs-bower-gulp,mrc535s/wkhtmltopdfbp,antecursor/heroku-buildpack-nodejs-gulp,fedosov/heroku-buildpack-nodejs-gulp-bower,bagelswitch/buildpack-nodejs,JProgrammer/heroku-buildpack-nodejs,jthomas/nodejs-v4-buildpack,ArthurHlt/nodejs-buildpack,marnold6/nodejs_buildpack,karthikeyabhaghavatula/nodejs_buildpack,bionikspoon/annotation-tool-heroku-buildpack-nodejs,elais/heroku-buildpack-nodejs,shinji62/nodejs-buildpack,Hylozoic/heroku-buildpack-nodejs-babel,thoughtbot/heroku-buildpack-nodejs,ankparik/nodejs-buildpack,kfiroo/heroku-buildpack-nodejs-grunt-compass,ctrlaltdel121/heroku-buildpack-nodejs,djng/heroku-buildpack-webapp-client,caiorogerio/heroku-buildpack-grunt,glawson6/heroku-buildpack-nodejs,comlanio/nodejs-buildpack,ShakrMedia/heroku-buildpack-nodejs,cheeyeo/heroku-buildpack-nodejs,kirs/heroku-buildpack-nodejs,fbaraujo/heroku-buildpack-yo-angular,The18thWarrior/ethereum-buildpack,willow-codes/heroku-buildpack-nodejs-bower-gulp-grunt-compass,Stibbons/heroku-buildpack-nodejs,rtomlinson/cf-node-buildpack,CloudSide/heroku-buildpack-nodejs,nknj/heroku-buildpack-yo-angular,comlanio/nodejs-buildpack,rtomlinson/cf-node-buildpack,AnyPresence/heroku-buildpack-nodejs,elasticio/elasticio-buildpack-nodejs-original,cesarandreu/heroku-buildpack-nodejs,mikeyoon/heroku-buildpack-nodejs,tinganho/heroku-buildpack,shoetomydixi/node_sigma_zapp_buildpack,heroku/heroku-buildpack-nodejs,glebm/heroku-buildpack-nodejs-grunt-sass,hpcloud/nodejs-buildpack,Ensequence/heroku-buildpack-yo-angular,brunoleite/heroku-buildpack-nodejs-jspm,kauffecup/nodejs-buildpack,shinji62/nodejs-buildpack,heroku/heroku-buildpack-nodejs,GoeGaming/heroku-buildpack-nodejs,ArthurHlt/nodejs-buildpack,aheissenberger/cloudcontrol-buildpack-meteor,vladikoff/heroku-buildpack-fxa,apiaryio/heroku-buildpack-nodejs-grunt,mergermarket/heroku-buildpack-nodejs,Scalingo/nodejs-buildpack,teodor-pripoae/heroku-buildpack-nodejs-gulp,vjm/heroku-buildpack-nodejs-grunt-compass,gvelo/heroku-buildpack-nodejs-grunt,leourbina/heroku-buildpack-nodejs-gulp-sass,caiorogerio/heroku-buildpack-grunt,dvdwasibi/heroku-buildpack-nodejs-grunt-sass,REscour/heroku-buildpack-nodejs-gulp-bower-sass,crawsible/nodejs-buildpack,mrc535s/wkhtmltopdfbp,tobobo/heroku-buildpack-ember,cnbin/heroku-buildpack-nodejs-grunt,heroku/heroku-buildpack-nodejs,StitchedCode/heroku-buildpack-nodejs-bower-gulp,NSWIDER/nodejs-oracle-buildpack,objectpartners/heroku-buildpack-nodejs-grunt,raghuveerthummeti/nodejs-buildpack,ShreyasWao/heroku-buildpack-nodejs,greenapes/heroku-buildpack-nodejs-bower-gulp-grunt-compass,aihaddad/heroku-buildpack-nodejs-gulp,bagelswitch/buildpack-nodejs,rmisio/heroku-buildpack-nodejs-grunt-compass-bower,Scalingo/nodejs-buildpack,jthomas/nodejs-v4-buildpack,nikhil-bhandari/heroku-buildpack-nodejs-grunt-compass,comlanio/nodejs-buildpack,chloeandisabel/heroku-buildpack-nodejs-gulp,celerityweb/heroku-buildpack-nodejs-gulp,tamdao/heroku-buildpack-nodejs,bpartridge83/heroku-buildpack-nodejs-grunt-gulp-bower,djng/heroku-buildpack-webapp-client,stevenrigby/heroku-buildpack-nodejs,artch/heroku-buildpack-nodejs-bower-gulp-grunt-compass,yookoala/heroku-buildpack-nodejs,hpcloud/nodejs-buildpack,Azema/DeployGitNodejs,tfynes-pivotal/nodejs-buildpack,crawsible/nodejs-buildpack,JasonZigelbaum/heroku-buildpack-nodejs,heroku/heroku-buildpack-nodejs,ks2software/nodejs-buildpack,twilson63/custom-buildpack-nodejs-cloud-foundry,jasonswett/heroku-buildpack-nodejs-grunt-compass,AdmanStrong/heroku-buildpack-nodejs-grunt-compass,gtothesquare/heroku-buildpack-nodejs-grunt,Grahahax/nodejs-buildpack,tastemade/heroku-buildpack-nodejs-gulp,effinggames/heroku-buildpack-nodejs-bower-gulp,greenapes/heroku-buildpack-nodejs-bower-gulp-grunt-compass,robgraeber/heroku-buildpack-nodejs-gulp,oocl-ncc-itm/nodejs-buildpack,ollisal/heroku-buildpack-nodejs,dhcole/nodejs-buildpack,soswow/heroku-buildpack-nodejs-grunt-compass,TJM/heroku-buildpack-nodejs,simonjjones/snowedjs_buildpack,Grahahax/nodejs-buildpack,sibeliusseraphini/heroku-buildpack-nodejs-bower-grunt,ArthurHlt/nodejs-buildpack,raghuveerthummeti/nodejs-buildpack,carouselapps/heroku-buildpack-nodejs,Jonatasmz/heroku-buildpack-nodejs,leourbina/heroku-buildpack-nodejs-gulp-sass,oocl-ncc-itm/nodejs-buildpack,marnold6/nodejs_buildpack,NSWIDER/nodejs-oracle-buildpack,adrianhuna/heroku-buildpack-nodejs-gulp-bower,twilson63/custom-buildpack-nodejs-cups,ankparik/nodejs-buildpack,shuber/heroku-buildpack-nodejs,glebm/heroku-buildpack-nodejs-grunt-sass,tjmehta/heroku-buildpack-nodejs-grunt-compass,kyleturco/heroku-buildpack-nodejs-gulp,uonline/heroku-buildpack,lemondemon/heroku-buildpack-nodejs-grunt-compass,pivotal-topher-bullock/lamby-js-buildpack,tfynes-pivotal/nodejs-buildpack,triceam/nodejs-buildpack,heroku/heroku-buildpack-nodejs,ks2software/nodejs-buildpack,kudos/heroku-buildpack-nodejs-jspm,TechRelease/cf-buildpack-nodejs,jthomas/nodejs-v4-buildpack,justinwalsh/heroku-buildpack-nodejs,karthikeyabhaghavatula/nodejs_buildpack,alexlafroscia/giteasy-buildpack,jrhite/heroku-buildpack-kwotefu,newyorkdata/heroku-buildpack-nodejs-gulp,ankparik/nodejs-buildpack,kauffecup/nodejs-buildpack,Scratch-it/heroku-buildpack-nodejs-grunt-compass,kevinSuttle/heroku-buildpack-nodejs,ks2software/nodejs-buildpack,mmgm/nodejs-buildpack,ajspera/heroku-buildpack-nodejs-grunt-compass,salesforceidentity/heroku-buildpack-nodejs-jdk8,gmaclennan/dokku-superstatic,digitalfibr/heroku-buildpack-nodejs,TechRelease/cf-buildpack-nodejs,karthikeyabhaghavatula/nodejs_buildpack,stephanmelzer/heroku-buildpack-nodejs-grunt-compass,bionikspoon/heroku-buildpack-nodejs,shinji62/nodejs-buildpack,denisvlr/heroku-buildpack-nodejs-grunt-compass,gabegorelick/fracas-buildpack,Amandeepsinghghai/heroku-buildpack-nodejs,gmaclennan/dokku-superstatic,oocl-ncc-itm/nodejs-buildpack,aquicore/heroku-buildpack-nodejs-gulp,triceam/nodejs-buildpack,triceam/nodejs-buildpack,ericf89/heroku-buildpack-nodejs-gulp-haml-sass-compass,Vestride/heroku-buildpack-nodejs-bower-depth,guilleva/heroku-buildpack-nodejs,chrisfelix82/heruku-buildpack-ffmpeg-nodejs,mbuchetics/heroku-buildpack-nodejs-grunt,tomfa/heroku-buildpack-nodejs,goodeggs/heroku-buildpack-nodejs,crawsible/nodejs-buildpack,tobobo/heroku-buildpack-ember,realtymaps/heroku-buildpack-assets,Crotery/heroku-buildpack-nodejs-grunt-compass,circuithub/heroku-buildpack-nodejs-new,Scalingo/nodejs-buildpack,gabegorelick/fracas-buildpack,jasonswett/fv-heroku-buildpack-nodejs-gulp-bower,JProgrammer/heroku-buildpack-nodejs,stevenrigby/heroku-buildpack-nodejs,dshafer/heroku-buildpack-nodejs,therewasaguy/heroku-buildpack-nodejs-grunt-compass,davidmfoley/heroku-buildpack-nodejs-gulp-bower,diegobent/heroku-buildpack-nodejs,davidmfoley/heroku-buildpack-nodejs-gulp-bower,robgraeber/heroku-buildpack-nodejs,Grahahax/nodejs-buildpack,JProgrammer/heroku-buildpack-nodejs,pkumar-appd/nodejs-buildpack,stephanmelzer/heroku-buildpack-nodejs-grunt-compass,timdp/heroku-buildpack-nodejs-gulp,sailrish/heroku-buildpack-nodejs,roder/nodejs-buildpack,cloudfoundry/nodejs-buildpack,roder/nodejs-buildpack,Stylitics/heroku-buildpack-nodejs,Jell-E/heroku-buildpack-nodejs-rust,Scalingo/nodejs-buildpack,shedd/heroku-buildpack-nodejs,devakone/heroku-buildpack-nodejs-grunt-compass,pkumar-appd/nodejs-buildpack,bpartridge83/heroku-buildpack-nodejs-grunt-gulp-bower,krry/heroku-buildpack-nodejs-gulp-bower,Scalingo/nodejs-buildpack,edgahan/heroku-buildpack-nodejs,ks2software/nodejs-buildpack,dhcole/nodejs-buildpack,WeConnect/heroku-buildpack-nodejs-grunt-compass,raghuveerthummeti/nodejs-buildpack,simonjjones/snowedjs_buildpack,caiorogerio/heroku-buildpack-grunt,jrhite/heroku-buildpack-skippydoo,cloudfoundry/nodejs-buildpack,ollisal/heroku-buildpack-nodejs,tweettypography/heroku-buildpack-nodejs,fcruxen/heroku-buildpack-nodejs,KamranAsif/heroku-buildpack-nodejs-bower-grunt,soswow/heroku-buildpack-nodejs-grunt-compass,jasonswett/heroku-buildpack-nodejs-gulp,pivotal-topher-bullock/lamby-js-buildpack,CandisIO/heroku-buildpack-node,cinghiale/heroku-buildpack-nodejs-grunt-compass,piglovesyou/heroku-buildpack-nodejs,bellhops/heroku-buildpack-nodejs,appstack/heroku-buildpack-nodejs-gulp,imothee/heroku-buildpack-nodejs-grunt,TheHealthPros/heroku-buildpack-nodejs,dickeyxxx/heroku-buildpack-nodejs,tfynes-pivotal/nodejs-buildpack,tastemade/heroku-buildpack-nodejs-grunt-compass,neoskop/heroku-buildpack-nodejs-grunt-compass,Azema/DeployGitNodejs,sailrish/heroku-buildpack-coffee,rtomlinson/cf-node-buildpack,dhcole/nodejs-buildpack,nikhil-bhandari/ng-cli-buildpack,cloudControl/buildpack-nodejs,The18thWarrior/ethereum-buildpack