NiFi install fix

[amolthacker]

No description provided.

[chriscasano]

Thanks for cleaning this up Amol!!! I didn't commit changes I had on Friday so there's definitely a few changes you didn't get, but that's ok. Passing session variables unfortunately won't work with roachprod. Even if you use double quotes. you have to use EOF redirects to get them in there. The run statements are using the variables local on the servers and not your current session. it's ok though, I'll try incorporating changes without merging. I really appreciate you looking at this!!!!

[amolthacker]

No worries, let me know if I can help with merging any of the new changes or anything else. Yeah using EOF redirects is a better approach in general ... these are just quick fixes if you want to continue automating the current way.
(PS: had make a few changes to some hard-coded pieces to get roachprod working with my GCE project)