Test system leds of Witherspoon system.

This change includes:
   - Added test cases to turn on/off power and fault LEDs.
   - Added NA system LED test cases in skip lists.

Resolves openbmc/openbmc-test-automation#529

Change-Id: I8bc8e945d9cb76bd6495775110517c2a49ab8803
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/test_lists/skip_test_palmetto b/test_lists/skip_test_palmetto
index 178c810..a927697 100644
--- a/test_lists/skip_test_palmetto
+++ b/test_lists/skip_test_palmetto
@@ -47,3 +47,6 @@
 #https://github.com/openbmc/openbmc-test-automation/issues/546
 -e CPU_Present
 -e DIMM3_Present
+# System LED test cases which are NA for Palmetto system.
+-e Test_Beep_LED_And_Verify_Via_REST
+-e Test_Fault_LED_And_Verify_Via_REST