Code update reboots check

Fixes:
   - boot count set to zero in utils.robot
   - add boot count check in code update path
   - add check for kernel reboot btime persistency

Resolves openbmc/openbmc-test-automation#311

Change-Id: I35f11c28d4f162f9440ef426ee3da6c70b80985c
Signed-off-by: George Keishing <gkeishin@in.ibm.com>
2 files changed