Make sure Facter is only executed on agent

  This commit moves conditionals based on values obtained from Facter
  inside code blocks that are only executed on agents and replaces
  the use of Facter['osfamily'].value with Facter.value:(:osfamily).

  Without this change we are returning values based off the master's
  facts, so if a Debian agent checks into a RedHat master then the type
  is currently making a decision based off of RedHat and not the actual
  OS of the agent running the catalog.  Code ran outside blocks is
  evaluated on masters and inside a block is evaluated by the agent when
  the catalog is executed.  We do not notice this because all our
  testing uses "puppet apply" and autorequire only matters when they
  find a matching resource name in the catalog.  The latter results
  in no error because the relationship is simply ignored on the Debian
  agent if a package resource with the RedHat name is not found.

  This issue was found by running facter 3, the C++11 re-implementation
  under the jruby and clojure implemented puppetserver.  The clojure
  jni shim written so that facter can be ran inside of puppetserver does
  not implement the [] method for the Facter module but the ruby shim
  does.  So I noticed that the code had an issue when
  Facter['osfamily'].value was executed on the master, which returned a
  not method error.  Once again, something we didn't notice becuase we
  do not test against a master.  I decided to migrate to
  Facter.value(:osfamily) to simply keep to an API that is consistent
  across both puppet and puppetserver but fixing where the code runs
  does actually solve the not method found error.

Change-Id: I24b0b20b2839c7bc33a76ac14849783f2285579f

Author: ody

lib/puppet/type/swift_object_expirer_config.rb

@@ -44,12 +44,10 @@ def should_to_s( newvalue )
   end
 
   # Require the package providing object-expirer to be present
-  if Facter['osfamily'].value == 'Debian'
-    autorequire(:package) do
+  autorequire(:package) do
+    if Facter.value(:osfamily) == 'Debian'
       'swift-object-expirer'
-    end
-  elsif Facter['osfamily'].value == 'RedHat'
-    autorequire(:package) do
+    elsif Facter.value(:osfamily) == 'RedHat'
       'openstack-swift-proxy'
     end
   end