Missed a marathon_config.get_cluster().
Missed a marathon_config.get_cluster().

I'd like to catch this with a marathon_itest and we even already have paasta_serviceinit_steps
but it invokes methods directly whereas the bug was in main(). I think that itest should change
to invoke stuff via the command line. But not today.

gstarnberger/paasta,somic/paasta,Yelp/paasta,Yelp/paasta,somic/paasta,gstarnberger/paasta