- fix noop workload ops
- get rid of unused workload option

The codes-workload-test and codes-workload-mpi-replay both support
the new paramters of the bgp-io language workload generator. Also,
support has been added to the config file and codes-workload-mpi-replay
program for loading the parameters of a darshan config file.

Updating the workload test to use the config file for the 'bgp_io_workload' and 'test' workload types. Loads the workload file for the bgp_io_workload type. Tests for remaining operations are to be added