Fix issue with bluepill 0.0.66

The start|stop... commands need to be put *before* the service name,
and it's like that for ages
(https://github.com/bluepill-rb/bluepill/commit/aa871981af15fc32a38a3a3d65eefdc1afb8484d)

Don't know why it's like that in this cookbook, but this makes it work
for me :)