Add support for puppet 3.7 (puppetserver)

[mlehner616]

This module doesn't install the hiera-eyaml gem correctly on the new-ish puppet 3.7. This requires us to manually run the following command or work around it with an exec resource.

puppetserver gem install hiera-eyaml

[igalic]

is there a specific check we can do to see if we're dealing with puppetserver?

[elyscape]

Not directly, but you can cheat and fall back to Ruby to tell you, like so:

$on_puppetserver = (inline_template('<%= RUBY_PLATFORM =>') == 'java')

[elyscape]

Also note that, while there is a rubyplatform fact, you cannot use it for this as it returns the Ruby platform that Facter and the Puppet agent run on. This does not necessarily match what the Puppet master runs on.

[hunner]

#45 and #58 essentially try to solve this, but not perfectly. I'm going to close the issue in preference for an actual PR.