ignore commented part of requirements entries

upgrade_requirements.py

@@ -33,7 +33,7 @@ def main():
  try:
  with io.open('requirements.txt') as f:
  print('Reading requirements...')
- requirements = [r.strip() for r in f.readlines()]
+ requirements = [r.split('#', 1)[0].strip() for r in f.readlines()]
  except:
  print('Error: No requirements.txt found')
  return