[AT-969] Update aerospike client to 4.0.8; Support Query API

[phufool]

Testing

1. Tested query API for the cpu_utilization set:
   aql> select * from test.cpu_utilization
   +---------------------------------------------+-------------------+---------------+-------------+
   | PK | avgCpu | timeStamp | trafficType |
   +---------------------------------------------+-------------------+---------------+-------------+
   | "ec2-54-159-69-124.compute-1.amazonaws.com" | 79.42760969673394 | 1510175324188 | "exchange" |
   | "ec2-54-84-112-189.compute-1.amazonaws.com" | 73.41829342827779 | 1510175335763 | "exchange" |
   +---------------------------------------------+-------------------+---------------+-------------+
   2 rows in set (0.028 secs)

Test code:
val stmt = new Statement()
stmt.setNamespace("test")
stmt.setSetName("cpu_utilization")
stmt.setFilter(Filter.equal("trafficType", "exchange"))
UserstoreAerospikeClient.UserProfileSetOps.query(stmt) foreach { m =>
logger.info("PHUTEST map = " + m)
}

Output:
Map(ec2-54-159-69-124.compute-1.amazonaws.com -> (gen:16),(exp:250464224),(bins:(timeStamp:1510176224164),(avgCpu:78.23558607858752),(trafficType:exchange)), ec2-54-84-112-189.compute-1.amazonaws.com -> (gen:16),(exp:250464235),(bins:(timeStamp:1510176235721),(avgCpu:73.03427051274991),(trafficType:exchange)))

[andrewhwangxad]

Looks good to me

[xun-gong]

looks good