test-distro: Fix broken help case statement
test-distro: Fix broken help case statement

Change-Id: I29d20b200162511fd8dd5d577df57b3f3fd680a9
Signed-off-by: Andrew Jeffery <02e0a999c50b1f88df7a8f5a04e1b76b35ea6a88@aj.id.au>

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