(bug) - Include function dir in module builds

Add missing function dir to module builds.

Author: jordanbreen28

lib/puppet/modulebuilder/builder.rb

@@ -19,6 +19,7 @@ class Builder
       '!/data/**',
       '!/docs/**',
       '!/files/**',
+      '!/functions/**',
       '!/hiera.yaml',
       '!/lib/**',
       '!/locales/**',