MM: add codecs to MirrorManager

In addition to this change it was necessary to manually add the new
codecs directory to the database as a new entry in the 'category' table.

Signed-off-by: Adrian Reber <adrian@lisas.de>

roles/mirrormanager/frontend2/templates/mirrormanager2.cfg

@@ -214,6 +214,11 @@ umdl_master_directories = [
         'path': '/srv/pub/alt/',
         'category': 'Fedora Other'
     },
+    {
+        'type': 'directory',
+        'path': '/srv/codecs.fedoraproject.org/',
+        'category': 'Fedora Codecs'
+    },
 #    {
 #        'type':'directory',
 #        'path':'../testdata/pub/fedora/linux/',