(maint) Bump facts version expectation to 5 in acceptance suite

Latest openvox-agent is including openfact 5.

Author: jpartlow

acceptance/tests/ensure_puppet_facts_can_use_facter.rb

@@ -6,7 +6,7 @@
     step 'test puppet facts with correct facter version' do
       on(agent, puppet('facts'), :acceptable_exit_codes => [0]) do |result|
         facter_major_version =  Integer(JSON.parse(result.stdout)["facterversion"].split('.').first)
-        assert(4 >= facter_major_version, "wrong facter version")
+        assert(5 >= facter_major_version, "wrong facter version")
       end
     end