Add back credstash, as nubis-consul still uses it directly.
Add back credstash, as nubis-consul still uses it directly.

Safe to remove once nubisproject/nubis-consul#218 closes

limed/nubis-base,limed/nubis-base,Nubisproject/nubis-base,gozer/nubis-base,Nubisproject/nubis-base,gozer/nubis-base,tinnightcap/nubis-base,limed/nubis-base,gozer/nubis-base,tinnightcap/nubis-base,tinnightcap/nubis-base