code: def get_envs_in_group(group_name, nova_creds):
      
      envs = []
      for key, value in nova_creds.items():
          supernova_groups = value.get('SUPERNOVA_GROUP', [])
          if hasattr(supernova_groups, 'startswith'):
              supernova_groups = [supernova_groups]
          if group_name in supernova_groups:
              envs.append(key)
          elif group_name == 'all':
              envs.append(key)
      return envs
docs: Takes a group_name and finds any environments that have a SUPERNOVA_GROUP
      configuration line that matches the group_name.