old_contents: user = 'username'
  passwd = 'password'
  
  DATADIR = '/path/to/the/gpm/data/directory'
  
new_contents: user = 'username'
  passwd = 'password'
  
  DATADIR = '/path/to/the/gpm/data/directory'
  THRESH_ADJ_ABSPATH = '/path/to/the/threshold/adjustment/raster'
  THRESHOLDS_ABSPATH = '/path/to/the/threshold/values/file'
  
subject: Update credentials.py