586ea75 coreos-download: add tab view for coreos download page

Authored and Committed by abai 4 years ago
    coreos-download: add tab view for coreos download page
    
    The current view for coreos download page requires users scrolling a
    lot in order to view cloud operators download because of the long list of
    cloud launchable instances. To improve this, tab view is added.
    
    Related to: https://pagure.io/fedora-websites/issue/964
    Signed-off-by: Allen Bai <abai@redhat.com>