Test boot count after BMC reboot.

This change includes:
  - Added test case to check boot count after BMC reboot.
  - Added keyword to get boot count based on bootime change.
  - Added keyword to set boot count.

Resolve openbmc/openbmc-test-automation#352

Change-Id: I6b831c96cae188788fb2161a8cafddf15ac1b326
Signed-off-by: Sweta Potthuri <spotthur@in.ibm.com>
2 files changed