Typesafe-conductr-cli

447 packages cacert file into OSX native executable to ensure SSL cert validation works in the OSX (look for the PR description for further details as to why this is required).

Also improve the error reporting during sandbox image download. Only HTTP 404 will be reported as artefact not found. If `HTTPError` and `URLError` occur, these will be reported as error message.

This is done by upgrade to dcos modules `0.4.16` 438

Download sandbox image from Lightbend generic repo if Bintray credential is not supplied for ConductR `2.1` onwards 404

This release fixes a bug introduced in 1.2.4 where `conduct load` would fail if there was a directory in `PWD` that had the same name as the bundle you were attempting to load. To fix this, we only load directories as bundles if their format can be detected. Otherwise, we attempt to resolve them as we did in prior releases.

* Fix error invoking `dcos conduct load-license` command 426 (fixes 425)
* Introduce `-f` option to `conduct load-license` to ignore cached auth token 427 (fixes 424)

**New features**
- Docker resolver 406

**Improvements**
- `conduct load` now automatically invokes `bndl` 414
- `bndl` now supports processign ConductR bundles 415
- License validation failure no longer stops sandbox from starting up 417 and 419
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**Bug fixes**
- Use correct HTTP calls when downloading license in DCOS mode 418
- Further fixes for sandbox host file detection 420
- conduct setup-dcos improved to detect conduct location when not on path and deal with broken symlinks 407
- `bndl` now preserves mtime thus ensuring same hash across runs with same input 409
- Fix missing mock on `conductr_cli.sandbox_run_jvm.cleanup_tmp_dir` causing dir to be created in cwd 410
- Make OCI in Docker a mandatory feature so that `--no-default-features` doesn't disable it 405