Tidy up publication steps
Tidy up publication steps

Removed a redundant step and set a more generic instance variable for
the attachment

robinwhittleton/whitehall,alphagov/whitehall,alphagov/whitehall,alphagov/whitehall,ggoral/whitehall,hotvulcan/whitehall,robinwhittleton/whitehall,robinwhittleton/whitehall,ggoral/whitehall,hotvulcan/whitehall,ggoral/whitehall,YOTOV-LIMITED/whitehall,alphagov/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,askl56/whitehall,askl56/whitehall,askl56/whitehall,YOTOV-LIMITED/whitehall,ggoral/whitehall,robinwhittleton/whitehall,hotvulcan/whitehall,hotvulcan/whitehall,YOTOV-LIMITED/whitehall