move import to atc instead atccmd
move import to atc instead atccmd

[#128317147]

Signed-off-by: James Quintana <d27bc0d2d15da5ab73e41c4bc24f60b09b05fd67@pivotal.io>

concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse,concourse/concourse