Fix bug where installing crowbar hangs.  This was due to pull

https://github.com/crowbar/crowbar/pull/1909

which needed to be manually merged to roxy.
Fixed bug in install-chef.sh in both pebbles and roxy where the
/var/run/crowbar dir must exist before chef_or_die is called to
prevent installation hang.
Merge pull request #1914 from cdearborn/pull-req-master-1cfee27b998d6388ba6f06180574f1e27e8ecdd8

Fixed issue where crowbar install hangs [1/1]