[Skiboot] [PATCH] travis: Add debian stretch and unstable

[Stewart Smith]

Stewart Smith <stewart at linux.vnet.ibm.com> writes:
> At the moment, we mark them both as being able to fail, as we're
> hitting an assert in one of the unit tests on debian stretch, and
> that hasn't yet been chased down.
>
> Signed-off-by: Stewart Smith <stewart at linux.vnet.ibm.com>

Merged to master as of 0b134f57306b8f1e0f2d9eedd0baf9d73488f4be

(let's see how this goes...)

-- 
Stewart Smith
OPAL Architect, IBM.