Kinetic Simulator:
Update getKeyRange behavior with the same start key and end key:
If key exists in simulator/drive, 
start key equals end key, start key inclusive, end key inclusive,
getKeyRange return startkey.
start key equals end key, start key inclusive, end key exclusive,
getKeyRange return empty list.
start key equals end key, start key exclusive, end key inclusive,
getKeyRange return empty list.
start key equals end key, start key exclusive, end key exclusive,
getKeyRange return empty list.