Update benchpress to run mongodb example

[dougc333]

1. change the curl -X PUT -H "Content-Type: application/json" -d @test-jobs/hbase.json http://controller:7000/job line to curl -X POST -H "Content-Type: application/json" -d @test-jobs/hbase.json http://controller:7000/job; change PUT to POST

2)register WorkerControlResource to WorkerJerseyApp

3. add install(new DefaultKeyGeneratorFactoriesModule()) and install(new DefaultValueGeneratorFactoryFactoriesModule()) to MultiDB/WorkerMain

4. add default ctors to Key/Value impl classes