Make mwclient respect the provided HTTP/HTTPS scheme

Fixes https://github.com/WikiTeam/wikiteam/issues/358

dumpgenerator.py

@@ -813,7 +813,7 @@ def getXMLRevisions(config={}, session=None, allpages=False):
     apiurl = urlparse(config['api'])
     # FIXME: force the protocol we asked for! Or don't verify SSL if we asked HTTP?
     # https://github.com/WikiTeam/wikiteam/issues/358
-    site = mwclient.Site(apiurl.netloc, apiurl.path.replace("api.php", ""))
+    site = mwclient.Site(apiurl.netloc, apiurl.path.replace("api.php", ""), scheme=apiurl.scheme)
     if not 'all' in config['namespaces']:
         namespaces = config['namespaces']
     else: