A module to create and delete boundary.com meters

This module allows the creation and deletion of meters.

It also brings down the required .pem files from boundary's API and installs them in /etc/bprobe. Much of this was created using the boundary puppet module as an example. Currently it does not support boundary tags.

This is my first pull request, so if there is anything wrong, and I'm sure there is even though I made sure to quadruple check, will be glad to fix it. Thanks.