test_topology_plugin: Don't rely on order of an attribute's values

Order of Python dicts/sets was always unreliable, but in Python 3
it's usually different every time. This affects the order in which
values of a LDAP attribute appear.
LDAP values are also specified to be unordered.

Part of the work for: https://fedorahosted.org/freeipa/ticket/4985

Reviewed-By: Martin Basti <mbasti@redhat.com>

ipatests/test_ipaserver/test_topology_plugin.py

@@ -72,4 +72,4 @@ class TestTopologyPlugin(object):
         entry = self.conn.get_entry(topoplugindn)
         assert(set(entry.keys()) == set(pluginattrs.keys()))
         for i in checkvalues:
-            assert(pluginattrs[i] == entry[i])
+            assert(set(pluginattrs[i]) == set(entry[i]))