Conductr-cli

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

There was a shortfall in our regex when checking for version numbers where alpha/beta designators weren't matched.

Further tweaks in support of ConductR 2.1 and its support of OCI

The `bndl` command allows creation of ConductR bundles from Docker or OCI images.

Improvements:
- 378 The `conduct info <bundle id>` is now presented to the user whenever a bundle is loaded, run, or stopped .
- 380 Tags are shown in `conduct info` in lieu of compatibility version if present.

Fixes:
- 349 `conduct deploy` command has been updated to match the actual Bintray webhook header.
- 370 number of agents is optional when performing license validation.
- 371 dedup lines from `sandbox logs`.
- 390 handle DCOS error when license endpoint is not present.