The reason given was: Removed in favor of the official OpenStack modules
Add this module to your Puppetfile:
mod 'puppetlabs-grizzly', '1.0.0-rc2'
Add this module to your Bolt project:
bolt module add puppetlabs-grizzly
Manually install this module globally with Puppet module tool:
puppet module install puppetlabs-grizzly --version 1.0.0-rc2
Direct download is not typically how you would use a Puppet module to manage your infrastructure, but you may want to download the module in order to inspect the code.