Update the Puppet module metadata files.
Remove the GPG keys shipped with the module.

The keys are already present on an installed system and we should not
trust some random Puppet module off the Internet to replace the OS's GPG
keys.
Merge pull request #1 from razorsedge/feature/clean_metadata

Update the Puppet module metadata files.
Merge pull request #2 from razorsedge/feature/no_keys

Remove the GPG keys shipped with the module.
Update unit tests from PR #2