Add `.needs_ram` and `.needs_swap` to `struct tst_test` to further improve [madvise06 fix](https://patchwork.ozlabs.org/project/ltp/patch/20260527103756.448843-1-chrubis@suse.cz/).
Add
.needs_ramand.needs_swaptostruct tst_testto further improve madvise06 fix.