REST power on skip mode for callout test cases.

Changes:
    - Added stack_mode=skip for power on to reduce execution
      time taken for the test cases. Power on per test case
      is not required, however we need to re-poweron if it
      was off.

Change-Id: I554360ee5e9f31fb6506ab7412d4f991353fad54
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
1 file changed