erp5: fix - check cache hit say HIT when STALE

When Apache Traffic Server say "[cSsSfU]" in "Via" header,
"cS" means the cache served a new content (~= cache miss)

stack/erp5/buildout.cfg

@@ -191,7 +191,7 @@ output = ${buildout:directory}/template-http-monitor.cfg.in
 < = download-base
 url = ${:_profile_base_location_}/monitor-templates/monitor-check-cache-hit.in
 download-only = true
-md5sum = 8fa7cad311d1c525bca7eb66cda4874c
+md5sum = 878833710ffd2e0734989cb9c93a8103
 filename = monitor-check-cache-hit.in
 mode = 0644
 

stack/erp5/monitor-templates/monitor-check-cache-hit.in

@@ -84,7 +84,7 @@ def do_request(url):
   m = Message(response_headers)
 
   # see http://labs.omniti.com/people/mark/ats_sa/slides.html#slide-18
-  if any("[cHs" in header or "[cSs" in header for header in m.getheaders('via')) or \
+  if any("[cHs" in header for header in m.getheaders('via')) or \
      any("HIT" in header for header in m.getheaders("x-cache")):
     debug("Cache hit found in 'Via' or 'X-Cache' headers")
   else: