Add node 6.7.0, remove node 6.5.0
Add node 6.7.0, remove node 6.5.0

source url: https://nodejs.org/dist/v6.7.0/node-v6.7.0.tar.gz, source sha256: 02b8ee1719a11b9ab22bef9279519efaaf31dd0d39cba4c3a1176ccda400b8d6

[#131225127]

ks2software/nodejs-buildpack,cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,karthikeyabhaghavatula/nodejs_buildpack,kauffecup/nodejs-buildpack,pkumar-appd/nodejs-buildpack,roder/nodejs-buildpack,kauffecup/nodejs-buildpack,roder/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack,oocl-ncc-itm/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack,ks2software/nodejs-buildpack,ks2software/nodejs-buildpack,roder/nodejs-buildpack,NSWIDER/nodejs-oracle-buildpack,cloudfoundry/nodejs-buildpack,ks2software/nodejs-buildpack,karthikeyabhaghavatula/nodejs_buildpack,ks2software/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,oocl-ncc-itm/nodejs-buildpack,pkumar-appd/nodejs-buildpack,cloudfoundry/nodejs-buildpack,karthikeyabhaghavatula/nodejs_buildpack,pkumar-appd/nodejs-buildpack,ks2software/nodejs-buildpack,kauffecup/nodejs-buildpack,cloudfoundry/nodejs-buildpack