(bug) - Add lib dir to built modules

Prior to this commit, the lib dir would be missing from built modules.
This meant any types/providers defined in lib/ were not included in the
modules, resulting in broken installs.

Author: jordanbreen28

lib/puppet/modulebuilder/builder.rb

@@ -20,6 +20,7 @@ class Builder
       '!/docs/**',
       '!/files/**',
       '!/hiera.yaml',
+      '!/lib/**',
       '!/locales/**',
       '!/manifests/**',
       '!/metadata.json',