Azure: Make dnf repos consistent
    
    Build container(image registry.fedoraproject.org/f32/fedora-toolbox)
    has two more dnf repos enabled compared to Tests container(image
    fedora:32). This results in the packages built within the Build
    container can have dependencies which are unresolvable(missing)
    within Tests container.
    
    This enables updates-testing and updates-testing-modular,
    disables fedora-cisco-openh264 for Tests container.
    
    Fixes: https://pagure.io/freeipa/issue/8330
    Signed-off-by: Stanislav Levin <slev@altlinux.org>
    Reviewed-By: Alexander Bokovoy <abokovoy@redhat.com>