(maint) Fixes bug in copy_metaparams

Previously the copy_metaparams method was written incorrectly,
this commit fixes the logic to correctly check whether a parameter
is both a metaparameter AND not :alias before copying it over

Author: mhashizume

lib/puppet/type.rb

@@ -361,7 +361,7 @@ def self.newmetaparam(name, options = {}, &block)
   # @return [Void]
   def copy_metaparams(parameters)
     parameters.each do |name, param|
-      self[name] = param.value if param.metaparam? && !name == :alias
+      self[name] = param.value if param.metaparam? && name != :alias
     end
     nil
   end