Catch exception if folder already exists

Author: ivankravets

platformio/package/manager/base.py

@@ -91,7 +91,10 @@ def is_system_compatible(value):
  @staticmethod
  def ensure_dir_exists(path):
  if not os.path.isdir(path):
- os.makedirs(path)
+ try:
+ os.makedirs(path)
+ except: # pylint: disable=bare-except
+ pass
  assert os.path.isdir(path)
  return path