Iotedgehubdev

Added
* Support host network for modules
* Standalone binaries of iotedgehubdev for Windows is available

Added
* Support environment variables for single module ([193](https://github.com/Azure/iotedgehubdev/issues/193))
* Add validateconfig command to check whether configuration is valid

Changed
* Use error code 2 for invalid configuration

Changed
* Use range version for dependences to avoid incompatible issue

Added
* Add module twin support

Changed
* Upgrade docker-py dependency to support connect remote Docker engine with ssh://
* Output errors to stderr

Added
* Allow specifying Docker daemon socket to connect to with the `--host/-H` option
* docker-compose as a pip dependency
* Partially support `on-unhealthy` restart policy by falling back to `always`
* Provide more friendly information when starting without setting up

Changed
* Update testing utility image version to 1.0.0

Added
* Support parsing `Binds` in `createOptions`
* Log in registries with credentials in deployment manifest

Changed
* Fix authentication error when hostname is longer than 64