contrib/packaging/Makefile

--- a/contrib/packaging/Makefile	Wed Aug 21 17:56:50 2019 +0200
+++ b/contrib/packaging/Makefile	Sun Aug 25 19:38:09 2019 +0700
@@ -6,10 +6,10 @@
   buster
 
 UBUNTU_CODENAMES := \
-  trusty \
   xenial \
-  artful \
   bionic \
+  cosmic \
+  disco
 
 FEDORA_RELEASES := \
   20 \