fix BDD tests around node create [1/1]

BDD tests were breaking around create/destroy node bacause of running wiht Jig's.
Currently, interactions with chef have been restricted to production env.


 .../app/controllers/nodes_controller.rb            |   40 +++++++++++++++++---
 1 file changed, 34 insertions(+), 6 deletions(-)

Crowbar-Pull-ID: 8af6288a13aa3784784eec70f69744be75cd232e

Crowbar-Release: development