administration: fix incremental consistency check for non UTC timezone

When zope does not run in a UTC timezone,
last_active_process.getStartDate will be in local timezone.

If we just cast this to string and compare it against
indexation_timestamp which is UTC in our case (because we don't use SET
time_zone statement), we'll convert two dates in different timezone,
which practically in this case can lead to not checking some documents
or checking documents twice.

bt5/erp5_administration/SkinTemplateItem/portal_skins/erp5_administration/Alarm_activateCheckConsistency.py

@@ -3,7 +3,10 @@ kw = {}
 if context.getProperty('incremental_check'):
   last_active_process = context.getLastActiveProcess()
   if last_active_process is not None:
-    kw['indexation_timestamp'] = '>= %s' % last_active_process.getStartDate().ISO()
+    kw['indexation_timestamp'] = {
+        'query': last_active_process.getStartDate(),
+        'range': '>='
+    }
 
 active_process = context.newActiveProcess().getRelativeUrl()
 query_string = context.getProperty('catalog_query_string', '')