REDFISH: Script fix needed for to remove hard-coded channel number from test_multiple_interfaces.robot

Changes:
- Fix to remove hard-coded channel number

Tested:
- Ran redfish/managers/test_multiple_interfaces.robot

Change-Id: I3c33f667d08e50d6faef0fabe2c392c794896de5
Signed-off-by: KothaiSrini <kothais@ami.com>
diff --git a/lib/resource.robot b/lib/resource.robot
index db0ccab..c85acee 100755
--- a/lib/resource.robot
+++ b/lib/resource.robot
@@ -100,6 +100,7 @@
 ${ICMP_TIMESTAMP_REQUEST}  13
 ${ICMP_ECHO_REQUEST}       8
 ${CHANNEL_NUMBER}          1
+${SECONDARY_CHANNEL_NUMBER}      2
 ${TCP_PACKETS}             tcp
 ${TCP_CONNECTION}          tcp-connect
 ${ICMP_NETMASK_REQUEST}    17