StripeReader#checkMissingBlocks() 's IOException info is incomplete

When the file's ErasureCodingPolicy is XOR-3-2-128k, then stop 3 datanodes which were used by the block. With the following op(read the file), the exception message was incomplete, because of the class of LocatedBlocks's info was not displayed complete.

hadoop@EC102:/home/lufei> hadoop fs -get /lufei/fsimage_0000000000268172191_140 test112
get: 3 missing blocks, the stripe is: AlignedStripe(Offset=0, length=131072, fetchedChunksNum=0, missingChunksNum=3); locatedBlocks is: LocatedBlocks{
hadoop@EC102:/home/lufei>