Add upstream/metadata.

debian/changelog

@@ -30,6 +30,7 @@ mosquitto (1.5.4-1) unstable; urgency=medium
   * Remove unused build dependency on python-all. (Closes: #901424).
   * Bump standards version to 4.2.1, no changes needed.
   * Bumped dh compat level to 11.
+  * Add upstream/metadata.
 
  -- Roger A. Light <roger@atchoo.org>  Thu, 08 Nov 2018 13:34:59 +0000
 

debian/upstream/metadata

@@ -0,0 +1,16 @@
+Name: mosquitto
+Bug-Database: https://github.com/eclipse/mosquitto/issues
+Bug-Submit: https://github.com/eclipse/mosquitto/issues/new
+Changelog: https://mosquitto.org/ChangeLog.txt
+Contact: https://dev.eclipse.org/mailman/listinfo/mosquitto-dev
+Repository: https://github.com/eclipse/mosquitto
+Security-Contact: https://www.eclipse.org/security/
+Reference:
+  Author: Roger A. Light
+  Title: "Mosquitto: server and client implementation of the MQTT protocol"
+  Journal: The Journal of Open Source Software
+  Year: 2017
+  Volume: 2
+  Number: 13
+  DOI: http://dx.doi.org/10.21105/joss.00265
+  eprint: http://joss.theoj.org/papers/ebbbbf7c7a2f7e98e32ae41ee88a3bca