run-robot: minor shellcheck fixes
run-robot: minor shellcheck fixes

Signed-off-by: Patrick Williams <cbb7353e6d953ef360baf960c122346276c6e320@stwcx.xyz>
Change-Id: I1c0a9d892d2b6635cb2e9cce6bfb826c770de456

openbmc/openbmc-build-scripts,openbmc/openbmc-build-scripts