IPMI - Reset Watchdog Timer.

Added two test cases to check:
- Watchdog reset
- Watchdog off

Resolves openbmc/openbmc-test-automation#1207

Change-Id: I1d7c56ff3d6cb297b691fb7970ab179ef1a56d17
Signed-off-by: Sweta Potthuri <spotthur@in.ibm.com>
2 files changed