Add wait_secs to test_stack_update_from_failed_patch

Add a 1 second pause to test_stack_update_from_failed_patch.  If a stack is
updated more than once per second, there is a possibility for busy waiting if
_verify_status neither returns nor raises an exception.

Please see
https://github.com/openstack/heat/blob/master/heat_integrationtests/common/test.py#L277
for _verify_status.

Closes bug: 1583630

Change-Id: Ifa9a5e9d69b47fe07fbc9ffcbe8f03479a24bb6c
diff --git a/functional/test_create_update.py b/functional/test_create_update.py
index 8c78951..aa4bdbf 100644
--- a/functional/test_create_update.py
+++ b/functional/test_create_update.py
@@ -150,6 +150,7 @@
     properties:
       value: Test
       fail: {get_param: do_fail}
+      wait_secs: 1
 '''
 
     def setUp(self):