fix facter issues, link to bug, fixes spiette#27

Author: Belmin Fernandez

lib/facter/selinux_custom_policy.rb

@@ -1,11 +1,12 @@
-# selinux_custom_policy.rb
+# As a workaround for Facter bug with EL7:
+# https://tickets.puppetlabs.com/browse/FACT-756
+# 
+
+require 'facter'
 
 Facter.add(:selinux_custom_policy) do
   confine :kernel => 'Linux', :osfamily => 'RedHat', :operatingsystemmajrelease => '7', :selinux => true
-
-  selinux_custom_policy = Facter::Core::Execution.exec('sestatus | grep "Loaded policy name" | awk \'{print $4}\'')
-
   setcode do
-    selinux_custom_policy
+    Facter::Util::Resolution.exec("sestatus | grep 'Loaded policy name' | awk '{ print $4 }'")
   end
 end