add new custom storage cases (and rename software RAID case)
    
    Summary:
    This adds the three new custom storage tests from D490 to the
    conf_test_suites table. It also renames the software RAID test,
    as I changed the test case names upstream (in the wiki) to be
    more consistent.
    
    Test Plan:
    After running the new tests, try submitting the results to the
    wiki. It should work correctly.
    
    Reviewers: jskladan, garretraziel
    
    Reviewed By: garretraziel
    
    Subscribers: tflink
    
    Differential Revision: https://phab.qadevel.cloud.fedoraproject.org/D491