use lodash-node rather than vanilla lodash so that lodash doesn't attach to require js even when it's available.

test/utils/jenkins-reporter.js

@@ -7,7 +7,7 @@
 module.exports = JenkinsReporter;
 
 var Base = require('mocha/lib/reporters/base');
-var _ = require('lodash');
+var _ = require('lodash-node');
 var chalk = require('chalk');
 var makeJUnitXml = require('./make_j_unit_xml');
 var fs = require('fs');