Investigate upgrading pants to 0.0.32+

Exception caught:
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/bin/pants", line 9, in <module>
    load_entry_point('pantsbuild.pants==0.0.28', 'console_scripts', 'pants')()
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/bin/pants_exe.py", line 66, in main
    _run()
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/bin/pants_exe.py", line 61, in _run
    result = goal_runner.run()
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/bin/goal_runner.py", line 168, in run
    result = self._do_run()
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/bin/goal_runner.py", line 251, in _do_run
    return engine.execute(context, self.goals)
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/engine/engine.py", line 27, in execute
    self.attempt(context, goals)
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/engine/round_engine.py", line 212, in attempt
    goal_executor.attempt(explain)
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/engine/round_engine.py", line 45, in attempt
    task.execute()
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/backend/codegen/tasks/code_gen.py", line 117, in execute
    self.genlang(lang, invalid_lang_tgts)
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/backend/codegen/tasks/apache_thrift_gen.py", line 152, in genlang
    gen = self.gen_python.gen
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/backend/codegen/tasks/apache_thrift_gen.py", line 127, in gen_python
    self._gen_python = self.create_geninfo('python')
  File "/Users/zmanji/workspace/gh-aurora/build-support/pants.venv/lib/python2.7/site-packages/pants/backend/codegen/tasks/apache_thrift_gen.py", line 101, in create_geninfo
    gen = gen_info['gen']

Exception message: 'NoneType' object has no attribute '__getitem__'

 PANTS_DEV=1 ./pants run src/python/pants/option:migrate_config -- <pants.ini path>

Found java in section [thrift-gen]. Should be java in section [gen.thrift].
Found extra_jvm_test_paths in section [ide]. Should be extra_jvm_test_paths in section [idea].
  Note: extra_jvm_test_paths now must be specified separately for idea and eclipse goals.
Found python_test_paths in section [ide]. Should be python_test_paths in section [idea].
  Note: python_test_path now must be specified separately for idea and eclipse goals.
Found python_lib_paths in section [ide]. Should be python_lib_paths in section [idea].
  Note: python_lib_path now must be specified separately for idea and eclipse goals.
Found python in section [thrift-gen]. Should be python in section [gen.thrift].
Found strict in section [thrift-gen]. Should be strict in section [gen.thrift].
Found supportdir in section [thrift-gen]. Should be supportdir in section [gen.thrift].
Found python_source_paths in section [ide]. Should be python_source_paths in section [idea].
Found version in section [thrift-gen]. Should be version in section [gen.thrift].
Found requirements in section [python-ipython]. Should be ipython_requirements in section [repl.py].
Found indices in section [python-repos]. Should be indexes in section [python-repos].
Found extra_jvm_source_paths in section [ide]. Should be extra_jvm_source_paths in section [idea].
  Note: extra_jvm_source_paths now must be specified separately for idea and eclipse goals.