sync-forum: Update for new API

Signed-off-by: Stéphane Graber <stgraber@ubuntu.com>

sync-forum

@@ -3,7 +3,7 @@ import dateutil.parser
 import glob
 import json
 import os
-from urllib.request import urlopen
+from urllib.request import urlopen, Request
 import ruamel.yaml
 import time
 
@@ -17,9 +17,15 @@ PROJECTS = ("lxc", "lxcfs", "lxd", "distrobuilder")
 def load_json(url):
     time.sleep(1)
     url = url.split(API_URL)[-1]
-    url = "%s/%s.json?api_username=%s&api_key=%s" % \
-        (API_URL, url, API_USERNAME, API_KEY)
-    return json.loads(urlopen(url).read().decode())
+    url = "%s/%s.json" % (API_URL, url)
+
+    headers = {}
+    headers["Api-Key"] = API_KEY
+    headers["Api-Username"] = API_USERNAME
+    headers["Content-Type"] = "application/json"
+
+    req = Request(url, headers=headers)
+    return json.loads(urlopen(req).read().decode())
 
 
 def filter_markdown(content):