add --memSize option to tune ktserver memory map (default of 2 is too small for flies!)
add --memSize option to tune ktserver memory map (default of 2 is too
small for flies!)

Change-Id: I1876926bb668a512b5725d6b38af06fa24a1137a

benedictpaten/cactus,benedictpaten/cactus,benedictpaten/cactus,benedictpaten/cactus,benedictpaten/cactus