Summary:
Fixed the path to generate the binary in order to able to use repo_import as command.
Changed contbuild location for publishing repo_import packman : mononoke contbuild uses the binary for testing, so it would be cheaper to just build there.
Reviewed By: StanislavGlebik
Differential Revision: D22526542
fbshipit-source-id: 926f8ed08169c34833ccc5711ec3fa26c3784615