Facts cannot be loaded on the first puppet run due to missing rubygems gem

[cmeury]

When puppetizing a new host, the new facts pip_version, virtualenv_version and python_version fail to be loaded because of a missing rubygems gem:

Warning: Could not load fact file /var/lib/puppet/lib/facter/pip_version.rb: no such file to load -- rubygems
Warning: Could not load fact file /var/lib/puppet/lib/facter/virtualenv_version.rb: no such file to load -- rubygems
Warning: Could not load fact file /var/lib/puppet/lib/facter/python_version.rb: no such file to load -- rubygems

Requiring rubygems was introduced with #146.

On the second puppet run, the warnings disappear because the gem is installed.

[cmeury]

Thanks a lot @shivapoudel