Update tarball path update on BMC
Update tarball path update on BMC

The new BMC file system /home/ is a read-only access. Changing the
tarball path to /tmp/.

Resolves  openbmc/openbmc-test-automation#941

Change-Id: Id701ba6ab2ab40e3c1242282da2d0b986ed1b764
Signed-off-by: George Keishing <bef0a9ecac45fb57611777c8270153994e13fd2e@in.ibm.com>

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