split install_default into upload/no-upload variants
    
    Summary:
    this should avoid unnecessary disk uploads and hopefully help
    further reduce the incidence of weird failures in the chained
    tests.
    
    With this change we should only upload disk images for the cases
    where we're actually going to run the chained tests: we won't
    upload disk images for default_install runs on images we don't
    run the chained tests for, or for the UEFI job for images we
    *do* run the chained tests for.
    
    We only actually need to run the current chained tests
    for Server DVD, Workstation live and KDE live x86_64; there's
    no need to run them for Everything boot, so we drop that.
    
    Test Plan:
    Do a full test run and make sure all tests run
    properly and we now only upload disk images where we really need
    to.
    
    Reviewers: jskladan, garretraziel
    
    Reviewed By: garretraziel
    
    Subscribers: tflink
    
    Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D794