storage/index: move doDir out of Do
storage/index: move doDir out of Do

mjg59/mantle,mjg59/mantle,glevand/coreos--mantle,dm0-/mantle,glevand/coreos--mantle,quantum/coreos-mantle,dm0-/mantle,quantum/coreos-mantle,marineam/mantle,marineam/mantle