Enable the skip if unavailable for the cisco-openh264 repo
With the cisco-openh264 being a baseurl and not mirroed if the repo
is unavailable all updates fail. We should enable users to get all
the standard Fedora updates if for some reason this repo is not working
which at times is out of the Fedora infra team's control.
Signed-off-by: Peter Robinson <firstname.lastname@example.org>