Increase timeout for heat env creation

Change-Id: Ic9161939f6fdb7088b56791020140ee6bfc5db13
diff --git a/tcp_tests/managers/envmanager_heat.py b/tcp_tests/managers/envmanager_heat.py
index 7432bd5..d6d7e90 100644
--- a/tcp_tests/managers/envmanager_heat.py
+++ b/tcp_tests/managers/envmanager_heat.py
@@ -526,7 +526,7 @@
             fields['environment_files'] = env_files_list
 
         self.__stacks.create(**fields)
-        self.wait_of_stack_status(EXPECTED_STACK_STATUS)
+        self.wait_of_stack_status(EXPECTED_STACK_STATUS, tries=140)
         LOG.info("Stack '{0}' created"
                  .format(self.__config.hardware.heat_stack_name))