Restore boot policy setting to default
Restore boot policy setting to default

Test leaves the boot setting to CDROM for Host OS boot. So the OS
fail to auto boot from petitboot.

Resolves openbmc/openbmc-test-automation#310

Change-Id: I268dc03193b4652a5b937856b8f6444c5111360f
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

openbmc/openbmc-test-automation,openbmc/openbmc-test-automation