tests: fix chunk data name
tests: fix chunk data name

When looking for chunk data feature, name starts with Chunk,
while it does not when enabling the chunk data.

AnilRamachandran/aravis,AravisProject/aravis,AravisProject/aravis,AravisProject/aravis,AravisProject/aravis,AnilRamachandran/aravis,AnilRamachandran/aravis,AnilRamachandran/aravis,AravisProject/aravis,AnilRamachandran/aravis