Revert "Store clients in context"

This commit caused a regression in tripleo when trying to signal
waitconditions.
This reverts commit de8b071acf21fe054267619124ac1a0374496185.
Fixes-bug: #1344079

Change-Id: Ib87eb81b687497a6669da38cb43b4f525cafa754

1 files changed, 3 insertions, 1 deletions

diff --git a/heat/engine/constraints.py b/heat/engine/constraints.py
index db4bdbb34..cc1f38eeb 100644
--- a/heat/engine/constraints.py
+++ b/heat/engine/constraints.py
@@ -18,6 +18,7 @@ import re
 import six
 
 from heat.common import exception
+from heat.engine import clients
 from heat.engine import resources
 from heat.openstack.common import strutils
 
@@ -574,8 +575,9 @@ class BaseCustomConstraint(object):
             "value": value, "message": self._error_message}
 
     def validate(self, value, context):
+        client = clients.Clients(context)
         try:
-            self.validate_with_client(context.clients, value)
+            self.validate_with_client(client, value)
         except self.expected_exceptions as e:
             self._error_message = str(e)
             return False