arch_gym_configs.py missing

[ShvetankPrakash]

We need to port over arch_gym_configs.py under configs dir to run our previous agents:

(arch-gym) ~/oss-arch-gym/sims/DRAM$ python train_bo_DRAMSys.py 
Traceback (most recent call last):
  File "/home/oss-arch-gym/sims/DRAM/train_bo_DRAMSys.py", line 8, in <module>
    from  bo.DRAMSysEstimator import DRAMSysEstimator
  File "/home/oss-arch-gym/bo/DRAMSysEstimator.py", line 4, in <module>
    from configs import arch_gym_configs
ImportError: cannot import name 'arch_gym_configs' from 'configs' (unknown location)

Was this intentional or we just forgot?