lib: refactor bootstrap_node.js regular expression

* use `+` instead of `*` where one-or-more is required
* switch from String.prototype.match() to RegExp.prototype.test()

PR-URL: https://github.com/nodejs/node/pull/10749


Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Jeremiah Senkpiel <fishrock123@rocketmail.com>
Reviewed-By: Jackson Tian <shyvo1987@gmail.com>