Fix HP LeftHand Performance issue with AO

Setting AdaptiveOptimization (AO) to ‘true’, the default value,
at volume create time significantly slows down the operation on
the LeftHand array. If at create time, AO is set to ‘true’, it
will result in an update operation following the create operation
to set this value. Therefore, it is best to not specify the value,
when ‘true’, and let it default to ‘true’.

Change-Id: I2c8860e3f25a7bcaa2d2efefeffc1c11319f33e2
Closes-Bug:#1285925
Merge "Fix HP LeftHand Performance issue with AO"