Add delay before powering on in CI test

Added 30 seconds delay to wait for mailbox to reset before powering on
to minimize the watchdog reset error.

Resolves openbmc/openbmc-test-automation#452

Change-Id: I654c1883dd83da1d0a13b948be36d8b5e404a59d
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/tests/test_basic_poweron.robot b/tests/test_basic_poweron.robot
index 039decb..2a8a445 100644
--- a/tests/test_basic_poweron.robot
+++ b/tests/test_basic_poweron.robot
@@ -38,5 +38,10 @@
     Initiate Host PowerOff
     Wait Until Keyword Succeeds  5 min  10 sec  Is OS Off
 
+    # Add delay to wait for mailbox to reset before powering on
+    # to minimize the watchdog reset error.
+    # TODO: openbmc/openbmc#1045
+    Sleep  30s
+
     Initiate Host Boot
     Wait Until Keyword Succeeds  10 min  10 sec  Is OS Starting