tools: add download testing
This script will take an environment variable (NODE_VERSION) and
download all of the files from http://nodejs.org/dist/v<NODE_VERSION>/
It will then loop through the SHASUMS256.txt file to check if the
SHA256SUMS match up. Initial issue here:
https://github.com/nodejs/build/issues/513
Checklist
-
documentation is changed or added -
commit message follows commit guidelines
Affected core subsystem(s)
tools