(MODULES-1174) Puppet 3.7 compatibility

 - Puppet 3.7 refactored underlying Win32 API code by changing gems and
   refactoring classes.  The windows-pr gem was removed which provides
   a number of methods and constants through mixins to the
   Puppet::Util::Windows::Security class.  A number of global constants
   are also defined in the namespaces ::Windows::File and
   ::Windows::Security.
 - Furthermore, some methods that used to be defined on
   Puppet::Util::Windows::Security are now in Puppet::Util::Windows::SID
 - Restructure the code to prefer Puppet 3.7 locations with a graceful
   fallback solution to 3.6.x with old gems, etc.
These seem like there is a possible case for windows-pr to not have loaded, which would result in issues.

It's probably better to just redefine the values instead of adding all this logic to check. Especially since they are just constants that are not changing.