[packman] update codecs one-click-install

[Olaf Hering]

On Tue, Nov 19, Olaf Hering wrote:

>  gstreamer-plugins-bad 1.2.1
>  gstreamer-plugins-libav 1.2.0

Actually none of the gstream plugins is listed in the ymp file. Why is
that?
And is there a smooth way to install these packages? The yast2 software
part always finds conflicts which can only be resolved by forcing a
vendor change. Can such questions be avoided?

Olaf