ACK/cmt: [SRU bionic] linux-buildinfo support

[Seth Forshee]

On Mon, Dec 03, 2018 at 12:55:08PM +0000, Andy Whitcroft wrote:
> Add linux-buildinfo package support.  This package contains all of the
> ABI information accumulated during the build.  This means we no longer
> have to install that data onto the end-user system, and means we only 
> have to download the ABI data when doing getabis.
> 
> Pull request below.
> 
> Proposing for SRU to bionic.

For all patches but "[Packaging] buildinfo -- switch getabis
configuration to new package":

Acked-by: Seth Forshee <seth.forshee at canonical.com>

As discussed offline, switching getabis should wait for a version of
getabis that still works if the prvious build did not produce a
buildinfo package.