fix(check-in): version
fix(check-in): version

When lsb-release is installed on a Debian (or Devuan), client_os_ver is set to GNU/Linux, whereas on Ubuntu that command returns with 14, 16, ...
Instead of querying lsb-release for a short description, we should look for the release number. Then, Debian version is set to 7, 8, ... Devuan gives 1, while Ubuntu still returns 14, 16, ...
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