dumpling-giant-x: use giant version of workunits

The firefly version of test_librbd_python at least does
not work on giant.

Signed-off-by: Josh Durgin <josh.durgin@inktank.com>
(cherry picked from commit 8755466c4b7c2402e3265ecb04a8300a4d0c146f)
Update giant.yaml(cherry picked from commit 35b3f4617c54dcb9705ca31489e2348bdb0e18b5)
Create dumpling-giant-x stress-split upgrade suite

Fixes: 9357
Signed-off-by: Warren Usui <warren.usui@inktank.com>
(cherry picked from commit c729372aaae82b8fb0a31a42f24d96924078282f)
Update giant.yaml

Added comments(cherry picked from commit 3dd1314c6fa70fefc4ea8c65c33bac1ad3ba267a)
Update giant.yaml(cherry picked from commit 90b6eec23fad6b3af1305de9c59a4759e076ebd3)
Update giant.yaml

fixed typos(cherry picked from commit 1f950d2bf4dd76d671ab1c85a87a5f1175305635)