Refs #703 Fixed bug when invalidating reports with --add-sites-new-hosts.

git-svn-id: http://dev.piwik.org/svn/trunk@6260 59fd770c-687e-43c8-a1e3-f5a4ff64c105

misc/log-analytics/import_logs.py

@@ -946,7 +946,7 @@ class Recorder(object):
         result = piwik.call_api(
             'CoreAdminHome.invalidateArchivedReports',
             dates=','.join(dates),
-            idSites=','.join(stats.piwik_sites),
+            idSites=','.join(str(site_id) for site_id in stats.piwik_sites),
         )