Integration changes of the Distributed RM queue configuration with Simple Parallelizer.

Refactoring fragment generation code for the RM to accommodate non RM, ZK based queue RM and Distributed RM.
Calling the Distributed RM for queue selection based on memory requirements.
Adjustment of the operator memory based on the memory limits of the selected queue.
Setting of the optimal memory allocation per operator in each minor fragment. This shows up in the query profile.