`//labgrid/run` does not handle arguments correctly

Example:

labgrid_genrule(
    name = "uname",
    srcs = ["@ape//ape:uname"],
    outs = ["uname.txt"],
    cmd = "$(location @rules_labgrid//labgrid/run) $(location @ape//ape:uname) -a > $@",
    tools = ["@rules_labgrid//labgrid/run"],
)

This would run uname on its own, without the -a flag.

This appears to be caused by 2a55a674