lstat current directory fails on Linux

[sagi-z]

Describe the bug
lstat for '.' fails on Linux

How To Reproduce

from pyfakefs import fake_filesystem
filesystem = fake_filesystem.FakeFilesystem()
os_module = fake_filesystem.FakeOsModule(filesystem)
os_module.getcwd()  # '/'
os_module.stat('.')  # works ok
os_module.lstat('.')
FileNotFoundError: [Errno 2] No such file or directory in the fake filesystem: '.'

Your enviroment
Please run the following and paste the output.

python -c "import platform; print(platform.platform())"
python -c "import sys; print('Python', sys.version)"
python -c "from pyfakefs.fake_filesystem import __version__; print('pyfakefs', __version__)"

Linux-4.15.0-76-generic-x86_64-with-debian-buster-sid
Python 3.7.3 (default, Nov 21 2019, 15:51:40)
[GCC 7.4.0]
pyfakefs 3.7.1