XCAT Automation - Group Power on/off

This change includes:
    1. Group power on using XCAT
    2. Group power off using XCAT
    3. Group power status using XCAT

This resolves openbmc/openbmc-test-automation#600

Change-Id: I16bcbc1e33d3946ee0902b78c08a0cf088c4ecf0
Signed-off-by: Prashanth Katti <prkatti1@in.ibm.com>
1 file changed