snapd fails in linode due to non-canonical kernel, runtime detection needed

[Zygmunt Krynicki]

A Linode instance of Ubuntu using the stock Linode kernel does not work with snapd as snapd assumes the ubuntu kernel (when os-release says it is ubuntu) and uses apparmor features otherwise not available.

There are several issues here:
 - branding !ubuntu as ubuntu
 - running on apparmor system that is not supporting new constructs
 - using runtime detection (across snapd+snap-confine) rather than compile-time or simplified (which distro + release) checks

I will update this bug as more information becomes available.

[Federico Gimenez (fgimenez)]

Hey Zygmunt, it looks the same as https://bugs.launchpad.net/snappy/+bug/1591148, marking as duplicate, we can update the information there.

Thanks!