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_sdr.robot b/ipmi/test_ipmi_sdr.robot
index c5f9d47..5d2f66d 100755
--- a/ipmi/test_ipmi_sdr.robot
+++ b/ipmi/test_ipmi_sdr.robot
@@ -9,6 +9,7 @@
 Library                ../lib/ipmi_utils.py
 
 Suite setup             Suite Setup Execution
+Suite Teardown          Redfish.Logout
 Test Teardown           Test Teardown Execution
 
 Force Tags              SDR_Test
@@ -285,6 +286,7 @@
 Suite Setup Execution
     [Documentation]  Do the initial suite setup.
 
+    Redfish.Login
     Redfish Power On  stack_mode=skip  quiet=1
 
     ${uri_list}=  Read Properties  ${OPENBMC_BASE_URI}list