old_contents: def devstack_params(change, params):
      if change.branch == 'stable/diablo':
          params['NODE'] = 'devstack-oneiric'
  
new_contents: def devstack_params(change, params):
      if change.branch == 'stable/diablo':
          params['NODE_LABEL'] = 'devstack-oneiric'
  
subject: Fix NODE_LABEL typo.