Merge branch 'ticket/2.2.x/12377_stdlib_facter_dot_d_loaderror_recovery_may_be_harmful' into 2.1.x

* ticket/2.2.x/12377_stdlib_facter_dot_d_loaderror_recovery_may_be_harmful:
  (#12377) Avoid infinite loop when retrying require json

Author: kbarber

lib/facter/facter_dot_d.rb

@@ -54,8 +54,8 @@ def json_parser(file)
         begin
             require 'json'
         rescue LoadError
-            require 'rubygems'
-            retry
+            retry if require 'rubygems'
+            raise
         end
 
         JSON.load(File.read(file)).each_pair do |f, v|