test mm_chunk before memmgr

Signed-off-by: Wilfried Chauveau <ithinuel@gmail.com>
test merge

Signed-off-by: Wilfried Chauveau <ithinuel@gmail.com>
split mm_chunk_validate tests to its own file & start testing split

Signed-off-by: Wilfried Chauveau <ithinuel@gmail.com>