Add whitelisted driver option added by the overlay driver to avoid breakage

Signed-off-by: Joffrey F <joffrey@docker.com>

tests/unit/network_test.py

@@ -0,0 +1,47 @@
+from __future__ import absolute_import
+from __future__ import unicode_literals
+
+import pytest
+
+from .. import unittest
+from compose.config import ConfigurationError
+from compose.network import check_remote_network_config
+from compose.network import Network
+
+
+class NetworkTest(unittest.TestCase):
+    def test_check_remote_network_config_success(self):
+        options = {'com.docker.network.driver.foo': 'bar'}
+        net = Network(
+            None, 'compose_test', 'net1', 'bridge',
+            options
+        )
+        check_remote_network_config(
+            {'Driver': 'bridge', 'Options': options}, net
+        )
+
+    def test_check_remote_network_config_whitelist(self):
+        options = {'com.docker.network.driver.foo': 'bar'}
+        remote_options = {
+            'com.docker.network.driver.overlay.vxlanid_list': '257',
+            'com.docker.network.driver.foo': 'bar'
+        }
+        net = Network(
+            None, 'compose_test', 'net1', 'overlay',
+            options
+        )
+        check_remote_network_config(
+            {'Driver': 'overlay', 'Options': remote_options}, net
+        )
+
+    def test_check_remote_network_config_driver_mismatch(self):
+        net = Network(None, 'compose_test', 'net1', 'overlay')
+        with pytest.raises(ConfigurationError):
+            check_remote_network_config({'Driver': 'bridge', 'Options': {}}, net)
+
+    def test_check_remote_network_config_options_mismatch(self):
+        net = Network(None, 'compose_test', 'net1', 'overlay')
+        with pytest.raises(ConfigurationError):
+            check_remote_network_config({'Driver': 'overlay', 'Options': {
+                'com.docker.network.driver.foo': 'baz'
+            }}, net)