Call knife configure with fixed values (bsc#967811)
Call knife configure with fixed values (bsc#967811)

This change makes sure that chef get configured with our expected
values. Otherwise it can happen that chef takes other default values
than usual.

rsalevsky/crowbar,aplanas/crowbar,toabctl/crowbar,rsalevsky/crowbar,crowbar/crowbar,SUSE-Cloud/crowbar,aplanas/crowbar,dirkmueller/crowbar,crowbar/crowbar,SUSE-Cloud/crowbar,dirkmueller/crowbar,toabctl/crowbar