os.utime fails to traverse symlinks

[cburroughs]

(Tested with 2.4)

Passes:

class TestLink(FakeFS):

    def setUp(self):
        #self.setUpPyfakefs()
        os.makedirs('/tmp/test-foo')
        os.symlink('/tmp/test-foo', '/tmp/test-bar')

    def tearDown(self):
        #self.teardownPyfakefs()
        pass

    def test(self):
        fname = '/tmp/test-bar/a.file'
        with open(fname, 'w') as f:
            f.write('\n')
        os.utime(fname, (time.time(), time.time()))

Fails:

class TestLink(FakeFS):

    def setUp(self):
        self.setUpPyfakefs()
        os.makedirs('/tmp/test-foo')
        os.symlink('/tmp/test-foo', '/tmp/test-bar')

    def tearDown(self):
        self.teardownPyfakefs()
        pass

    def test(self):
        fname = '/tmp/test-bar/a.file'
        with open(fname, 'w') as f:
            f.write('\n')
        os.utime(fname, (time.time(), time.time()))

  File "/home/csb/.local/lib/python2.7/site-packages/fake_filesystem.py", line 1745, in utime
OSError: [Errno 2] No such file or directory in fake filesystem: '/tmp/test-bar/a.file'

(FakeFS is the wraper from https://code.google.com/p/pyfakefs/issues/detail?id=22)