Some tests which create files and check file permissions assume the
umask is compatible with 022, and break when set to something like 007.
Explicitly set umask to 022
PR-URL: https://github.com/nodejs/node/pull/25213
Reviewed-By: Rich Trott <rtrott@gmail.com>
Reviewed-By: Ben Noordhuis <info@bnoordhuis.nl>