Fix issues of disco info leaking between entities with the same bare JIDs.

To ensure that disco info, or any settings which depend on the bound
JID, are correct, only set such information on or after the
session_bound event has fired.

sleekxmpp/plugins/xep_0115/caps.py

@@ -78,11 +78,12 @@ class XEP_0115(BasePlugin):
         disco = self.xmpp['xep_0030']
         self.static = StaticCaps(self.xmpp, disco.static)
 
-        self.api.settings['client_bare'] = False
-        self.api.settings['component_bare'] = False
         for op in self._disco_ops:
             self.api.register(getattr(self.static, op), op, default=True)
 
+        for op in ('supports', 'has_identity'):
+            self.xmpp['xep_0030'].api.register(getattr(self.static, op), op)
+
         self._run_node_handler = disco._run_node_handler
 
         disco.cache_caps = self.cache_caps