test: firmware uploadInProgress: minor cleanup
test: firmware uploadInProgress: minor cleanup

Signed-off-by: Patrick Venture <36c53fa43f47f3fd67cb2fc38031827244d18a1f@google.com>
Change-Id: I75a9cdba1897153201bf8226e1d668c1b5f60a46

openbmc/phosphor-ipmi-flash