[LTP] [PATCH] travis: Use official opensuse images

[Petr Vorel]

Hi Cyril,

> > We're using deprecated opensuse images [1] [2] which has been now
> > removed, which cause travis failures. Replace them with the official
> > ones.

> > [1] https://hub.docker.com/_/opensuse/
> > [2] https://github.com/docker-library/official-images/issues/5371

> That looks obvious enough to go in without review, acked anyways.
Thanks, pushed (with installed gzip – not installed by default).

Kind regards,
Petr