Fix network suite setup to take session before continuing
Fix network suite setup to take session before continuing

Changes:
       - Added redfish login at the suite setup

Tested:
      - Ran successfully  redfish/managers/test_bmc_network_conf.robot

Change-Id: I9840435c7ddb912dde1a0bbddc0cd9b37a2fc0f1
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation