v3 endpoints won't have legacy ID's (bug 1150930)

Change-Id: I8cc6bac7b0e549db7755df3a993db7d563907324

Author: dolph

keystone/catalog/controllers.py

@@ -58,7 +58,7 @@ def get_endpoints(self, context):
         self.assert_admin(context)
         legacy_endpoints = {}
         for endpoint in self.catalog_api.list_endpoints(context):
-            if not endpoint['legacy_endpoint_id']:
+            if not endpoint.get('legacy_endpoint_id'):
                 # endpoints created in v3 should not appear on the v2 API
                 continue