[entropy.server] move ChangeLog date format string to etpConst

libraries/entropy/const.py

@@ -390,6 +390,7 @@ def const_default_settings(rootdir):
         'distro_website_url': "http://www.sabayon.org",
         'changelog_filename': "ChangeLog",
         'changelog_filename_compressed': "ChangeLog.bz2",
+        'changelog_date_format': "%a, %d %b %Y %X +0000",
         # enable/disable packages RSS feed feature
         'rss-feed': True,
         # default name of the RSS feed

libraries/entropy/server/interfaces/db.py

@@ -922,7 +922,7 @@ class ServerPackagesRepositoryUpdater(object):
         msg = msg.rstrip()
 
         def _write_changelog_entry(changelog_f, atom, pkg_meta):
-            this_time = time.strftime("%a, %d %b %Y %X +0000")
+            this_time = time.strftime(etpConst['changelog_date_format'])
             changelog_str = """\
 commit %s; %s; %s
 Machine: %s; %s; %s