fix gelfAppender-test.js to reflect the above changes

test/gelfAppender-test.js

@@ -115,10 +115,9 @@ vows.describe('log4js gelfAppender').addBatch({
         return message;
       },
       'should be in the gelf format': function(message) {
-        assert.equal(message.version, '1.0');
+        assert.equal(message.version, '1.1');
         assert.equal(message.host, require('os').hostname());
         assert.equal(message.level, 6); //INFO
-        assert.equal(message.facility, 'nodejs-server');
         assert.equal(message.full_message, message.short_message);
         assert.equal(message.full_message, 'This is a test');
       }
@@ -246,7 +245,7 @@ vows.describe('log4js gelfAppender').addBatch({
       },
       'should pick up the options': function(message) {
         assert.equal(message.host, 'cheese');
-        assert.equal(message.facility, 'nonsense');
+        assert.equal(message._facility, 'nonsense');
         assert.equal(message._every1, 'Hello every one'); // the default value
         assert.equal(message._every2, 'Overwritten!'); // the overwritten value
         assert.equal(message._myField, 'This is my field!'); // the value for this message only