add task to combine inputs into single outputs dir
add task to combine inputs into single outputs dir

- the OPS_FILES param in the bosh-deploy task does not allow for
multiple ops-files inputs

[#134369499]

Signed-off-by: Nick Wei <397a225b6adb51a440bd3821475520403c3e9564@pivotal.io>

cloudfoundry/cli,cloudfoundry/cli,cloudfoundry/cli