Fix to accommodate boot flag default string change.

Default string changed from "default" to "Default".

Resolves openbmc/openbmc-test-automation#488

Change-Id: I2ba88b9700ab53feda98f91d31c33acb7c808f44
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/tests/test_boot_policies.robot b/tests/test_boot_policies.robot
index 3ed6a6c..f2b766e 100644
--- a/tests/test_boot_policies.robot
+++ b/tests/test_boot_policies.robot
@@ -152,7 +152,7 @@
 Restore Boot Settings
     [Documentation]  Restore default settings.
     Set Boot Policy  ONETIME
-    Set Boot Device  default
+    Set Boot Device  Default
     Close All Connections
 
 Test Init Setup