class_docstr: Test the packaging logic for the Lambda package
code: def setUp(self):
      self.setUpPyfakefs()
      self.fs.add_real_directory(self.TEST_CONFIG_PATH)
  
      config = CLIConfig(self.TEST_CONFIG_PATH)
  
      with patch("tempfile.gettempdir") as temp_dir_mock:
          temp_dir_mock.return_value = self.MOCK_TEMP_PATH
          self.packager = package.LambdaPackage(config)
  
file_path: streamalert/tests/unit/streamalert_cli/manage_lambda/test_package.py
imports: import os
  from mock import patch, Mock
  from pyfakefs import fake_filesystem_unittest
  from streamalert_cli.config import CLIConfig
  from streamalert_cli.manage_lambda import package
label_desc: Use image node_id 1 for calling the PackageTest obj's underlying member method code with example usage: obj.setUp() without return types