Fixed the following Pylint warnings:
boilerplate_test.py:34:8: R0205: Class 'Args' inherits from object, can be safely removed from bases in python3 (useless-object-inheritance)
boilerplate_test.py:46:8: W0612: Unused variable 'ret' (unused-variable)
boilerplate_test.py:18:0: C0411: standard import "import unittest" should be placed before "import boilerplate" (wrong-import-order)
boilerplate_test.py:19:0: C0411: standard import "from io import StringIO" should be placed before "import boilerplate" (wrong-import-order)
boilerplate_test.py:20:0: C0411: standard import "import os" should be placed before "import boilerplate" (wrong-import-order)
boilerplate_test.py:21:0: C0411: standard import "import sys" should be placed before "import boilerplate" (wrong-import-order)
hack/verify-boilerplate.sh -v will now print out why the file does
not match along with a diff if possible.
Note: boilerplate.py now has a unit test that is run along with
hack/verify-boilerplate.sh.