Modified the classnames for the test cases so that they work a bit better in Jenkins. Also adjusted the generate scripts to pull the latest commit sha from github.

scripts/rest_spec_updated.js

@@ -0,0 +1,64 @@
+var https = require('https');
+var lastCommitUrl = 'https://api.github.com/repos/elasticsearch/elasticsearch-rest-api-spec/commits/HEAD';
+var fs = require('fs');
+
+var lastRestSpecUpdateFile = __dirname + '/last_rest_spec_update.sha';
+var lastRestSpecUpdate;
+var updated;
+
+if (fs.existsSync(lastRestSpecUpdateFile)) {
+  lastRestSpecUpdate = fs.readFileSync(lastRestSpecUpdateFile, 'utf8');
+}
+
+var req = https.get(lastCommitUrl, function (incoming) {
+  if (incoming.statusCode !== 200) {
+    req.abort();
+    console.error('request for last commit failed', incoming.statusCode, incoming.headers);
+    return;
+  }
+
+  var body = '';
+
+  incoming.on('data', onData);
+  incoming.on('end', onEnd);
+
+  function onData(chunk) {
+    body += chunk;
+  }
+
+  function onEnd() {
+    incoming.removeListener('data', onData);
+    incoming.removeListener('end', onEnd);
+    var _req = req;
+    req = null;
+
+    var resp;
+    try {
+      resp = JSON.parse(body);
+    } catch (e) {
+      console.log('unable to parse response from github');
+      _req.emit('ready');
+      return;
+    }
+
+    if (lastRestSpecUpdate === resp.sha) {
+      updated = false;
+    } else {
+      updated = true;
+      fs.writeFileSync(lastRestSpecUpdateFile, resp.sha);
+    }
+    _req.emit('ready');
+  }
+});
+
+module.exports = function (cb) {
+  function done() {
+    cb(null, updated);
+  }
+
+  if (req) {
+    req.on('ready', done);
+  } else {
+    process.nextTick(done);
+  }
+};