Add Redfish login session for the suites

Change-Id: I5fb02f5b9dc2455bdcf3a3d8251bd0ba622c9773
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
diff --git a/ipmi/test_ipmi_chassis.robot b/ipmi/test_ipmi_chassis.robot
index d78164c..7d68b23 100644
--- a/ipmi/test_ipmi_chassis.robot
+++ b/ipmi/test_ipmi_chassis.robot
@@ -6,6 +6,8 @@
 Resource         ../lib/boot_utils.robot
 Library          ../lib/ipmi_utils.py
 
+Suite Setup      Redfish.Login
+Suite Teardown   Redfish.Logout
 Test Teardown    FFDC On Test Case Fail
 
 *** Test Cases ***