Hyper-kube-config

- [Zane Williamson]
- Adding support for IAM Authentication to hyperkube
- Adding additional cli flags for `--hyperkube-url`, `--hyperkube-stage`, `--aws-profile`, `--aws-region`, `--x-api-key`
- Cryptography package security fix

- [Christopher Zorn]
- Fix json serialization of set objects in cluster metadata return

- [Christopher Zorn]
- Make sure returned json in lambda handlers are consistent in cluster status handlers.
- Make sure stdout in cli tool is valid json
- Add support for multiple environments for a cluster. This allows for tagging workload environments along with cluster environments.

- [Zane Williamson] - Moving moto to dev-packages, changing short flag for environment from '-g' to '-e' (breaking change)

- [Christopher Zorn] - Adding tests, adding get-cluster-for-environment lookup, new storage module

- [Swarup Donepudi]
- Provide the option to user for `get` and `get-all` to merge with existing `~/.kube/config` or whatever the user passes using the option `-k`