Update ood_core library

[nickjer]

Updated ood_core library which now includes the following changes:

Added

• Added Batch Connect helper function to wait for port to be used.
  #57
• Can include Batch Connect helper functions when writing to files or running
  remote code. #58
• The Batch Connect helper functions are now available to use in the forked
  Batch Connect main script. #59
• The host and port environment variables are now available to use in the
  forked Batch Connect main script.
  #60

Fixed

• Fixed a bug with the nc command used in the Batch Connect helper functions
  for CentOS 7. #55
• Fixed not correctly detecting open ports for specific ip address in Batch
  Connect helper functions. #56
• Fixed a bug when parsing nodes in the Slurm adapter.
  #54