Code to revert back initial hostname.
Code to revert back initial hostname.

Resolves openbmc/openbmc-test-automation#1771

Signed-off-by: Prashanth Katti <def1213b2b853506bc42999227c7ced90b83bfd2@in.ibm.com>
Change-Id: I0aae7d1c9fb0d28d3cbf04d8c189a7243eea731d

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