Replaced cipher 3 with 17 as cipher 3 support is removed

Change-Id: I881d25ae24513f056a9cc208407d6e35e624eec4
Signed-off-by: Rahul Maheshwari <rahulmaheshwari@in.ibm.com>
diff --git a/lib/resource.robot b/lib/resource.robot
index 36603c5..dfd7a67 100755
--- a/lib/resource.robot
+++ b/lib/resource.robot
@@ -25,7 +25,7 @@
 # can override to "Dbus" from command line.
 ${IPMI_COMMAND}    External
 # IPMI chipher default.
-${IPMI_CIPHER_LEVEL}  ${3}
+${IPMI_CIPHER_LEVEL}  ${17}
 
 # PDU related parameters
 ${PDU_TYPE}         ${EMPTY}