Added utility to list currently running server instances

server/docker/instances

@@ -0,0 +1,29 @@
+#!/usr/bin/python2.7
+
+import urllib2
+import json
+import sys
+import config
+
+url = 'http://%s/api/serverinfo' % config.get('LEADERBOARD_ADDRESS_AND_PORT')
+
+opener = urllib2.build_opener(urllib2.HTTPHandler)
+request = urllib2.Request(url)
+request.get_method = lambda: 'GET'
+
+try:
+    response = opener.open(request).read()
+except urllib2.HTTPError, e:
+    print e.code
+    print e.read()
+    sys.exit(1)
+
+infos = json.loads(response)
+for info in infos['infos']:
+    print 'Name: %s, status: %s' % (info['name'], info['status'])
+    keys = info.keys()
+    keys.sort()
+    for key in keys:
+        if key == 'name' or key == 'status':
+            continue
+        print '    %s: %s' % (key, info[key])