Fix strict variables error when facts are missing

Author: alexjfisher

manifests/init.pp

@@ -34,7 +34,7 @@
   $write_threads                                                      = $collectd::params::write_threads,
 ) inherits collectd::params {
 
-  $collectd_version_real = pick($::collectd_version, $minimum_version)
+  $collectd_version_real = pick_default($facts['collectd_version'], $minimum_version)
 
   class { '::collectd::install':
     package_install_options => $package_install_options,

manifests/params.pp

@@ -135,5 +135,5 @@
   }
 
   # Override with custom fact value (present only if python is installed)
-  $python_dir            = pick($::python_dir, $default_python_dir)
+  $python_dir = pick($facts['python_dir'], $default_python_dir)
 }