test_log.SysLogHandlersTestCase.test_rfc_format fails with socket.error: [Errno 2] ENOENT error

Branch - stable/kilo

Running the tests inside a Docker container.

Commands -
tox -epy27 -- '(test_log.SysLogHandlersTestCase.test_rfc_format)'
tox -epy27 -- '(test_log.SysLogHandlersTestCase.test_standard_format)'

Except the above two tests all the other tests are passing .

Error:
##########################################
Captured traceback:
~~~~~~~~~~~~~~~~~~~
    Traceback (most recent call last):
      File "/murano/murano/tests/unit/test_log.py", line 34, in setUp
        facility=self.facility)
      File "murano/openstack/common/log.py", line 480, in __init__
        logging.handlers.SysLogHandler.__init__(self, *args, **kwargs)
      File "/usr/lib/python2.7/logging/handlers.py", line 759, in __init__
        self._connect_unixsocket(address)
      File "/usr/lib/python2.7/logging/handlers.py", line 759, in __init__
        self._connect_unixsocket(address)
      File "/usr/lib/python2.7/logging/handlers.py", line 787, in _connect_unixsocket
        self.socket.connect(address)
      File "/murano/.tox/py27/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 235, in connect
        while not socket_connect(fd, address):
      File "/murano/.tox/py27/local/lib/python2.7/site-packages/eventlet/greenio/base.py", line 37, in socket_connect
        raise socket.error(err, errno.errorcode[err])
    socket.error: [Errno 2] ENOENT
##########################################

Please let me know if I can collect more details for this.