Added fix for VMI suite
Added fix for VMI suite

Changes:
    - Replaced OBMC Reboot keyword with Redfish OBMC Reboot
    - Added Skip keyword in Update User Role And Set VMI IPv4 Origin keyword

Tested:
    Ran Test
openpower/ext_interfaces/test_vmi.robot

Change-Id: Id075795d654b89ba56b032b14d8e1007550d4ba4
Signed-off-by: Megha GN <077aca49710f803bdf61b2002a4f8477662309a9@ibm.com>

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