Fix network alias and network link comparison.

- Using set based comparison was not working consistently
  - With != operator worked locally but consistently failed on Travis
  - With 'not in' operator failed locally and on Travis

cloud/docker/docker_container.py

@@ -1373,7 +1373,8 @@ class Container(DockerBaseClass):
                 if network.get('aliases') and not connected_networks[network['name']].get('Aliases'):
                     diff = True
                 if network.get('aliases') and connected_networks[network['name']].get('Aliases'):
-                    if set(network.get('aliases')) != set(connected_networks[network['name']].get('Aliases')):
+                    for alias in network.get('aliases'):
+                        if alias not in connected_networks[network['name']].get('Aliases', []):
                             diff = True
                 if network.get('links') and not connected_networks[network['name']].get('Links'):
                     diff = True
@@ -1381,7 +1382,8 @@ class Container(DockerBaseClass):
                     expected_links = []
                     for link, alias in network['links'].iteritems():
                         expected_links.append("%s:%s" % (link, alias))
-                    if set(expected_links) != set(connected_networks[network['name']].get('Links', [])):
+                    for link in expected_links:
+                        if link not in connected_networks[network['name']].get('Links', []):
                             diff = True
                 if diff:
                     different = True