erp5: check cache hit script improve output

prints only on stderr

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 = 3362bea561597cd29d10d754c251c8bf
+md5sum = 754a5ecf47ad1eeb044b2d621219a459
 filename = monitor-check-cache-hit.in
 mode = 0644
 

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

@@ -11,13 +11,13 @@ from cStringIO import StringIO
 from HTMLParser import HTMLParser
 
 def debug(*args):
-  # sys.stdout.write("DEBUG: " + "\n     : ".join(" ".join((str(arg) for arg in args)).split("\n")) + "\n")
+  # sys.stderr.write("DEBUG: " + "\n     : ".join(" ".join((str(arg) for arg in args)).split("\n")) + "\n")
   pass
 def log(*args):
-  sys.stdout.write(" ".join((str(arg) for arg in args)) + "\n")
+  sys.stderr.write(" ".join((str(arg) for arg in args)) + "\n")
   pass
 def info(*args):
-  sys.stdout.write("INFO : " + "\n     : ".join(" ".join((str(arg) for arg in args)).split("\n")) + "\n")
+  sys.stderr.write("INFO : " + "\n     : ".join(" ".join((str(arg) for arg in args)).split("\n")) + "\n")
   pass
 last_warn_log = None
 def warn(*args):