Don't depend on the "run" alias doing shell expanding.

Instead dial it up explicitly.

This test started failing recently and I'm not sure why.  It also
doesn't make sense to me the replacing "run" with "process launch -X 1 --"
should make any difference - run is an alias for the latter.  But
it does pass with the change, and unless we are testing for the exact
run alias, it's better to ask for what we want explicitly.