my %results;
$results{$host}{$config}{$test} = 'OK'; # or 'FAILED'

##</code><code>##

---------------------------------
hosts | configs | tests | results
---------------------------------
host1 | conf1   | test1 | res1
      |         |----------------
      |         | test2 | res2
      |--------------------------
      | conf2   | test3 | res3
...
---------------------------------
host2 |
...