root@sparkmaster:~# apt-cache policy snapd
snapd:
  Installed: 2.15.2ubuntu1
  Candidate: 2.15.2ubuntu1
  Version table:
 *** 2.15.2ubuntu1 500
        500 http://us.archive.ubuntu.com/ubuntu xenial-updates/main amd64 Packages
        100 /var/lib/dpkg/status
     2.0.2 500
        500 http://us.archive.ubuntu.com/ubuntu xenial/main amd64 Packages