ci: Fix error testing under Fedora 31
test-hexdump test uses cmp which is in diffutils package. In former Fedora versions that package was installed as base package but on Fedora 31 we need to add it explicitly. Also show suite logs if tests failed to make it easier to fix them in the future.
Signed-off-by: Frediano Ziglio fziglio@redhat.com
ci passed at https://gitlab.freedesktop.org/fziglio/spice-streaming-agent/-/jobs/919986