Add node 6.14.1, remove node 6.13.1
Add node 6.14.1, remove node 6.13.1

source url: https://nodejs.org/dist/v6.14.1/node-v6.14.1.tar.gz
source sha256: 82ca9917819db13c3a3484bd2bee1c58cd718aec3e4ad46026f968557a6717be

[#156394483]

cloudfoundry/nodejs-buildpack,cloudfoundry/nodejs-buildpack,cloudfoundry/nodejs-buildpack,cloudfoundry/nodejs-buildpack