DCM integration

[clburlison]

Since GC already requires DCM it might make sense to have it host the packages.

If someone wants to work on this the version.txt file should likely stay the same format? Just have nodejs build the config map on get request. Also I'd like to make it optional so users can use basic web server or DCM.

I am not scheduled work for this. Resource limited at the moment but will accept a PR.

[LordJavi]

First approach for DCM side versx/DeviceConfigManager#103

[clburlison]

Thanks LordJavi. I still haven't had time to look into these changes. After the core functionality of dmon is improved I'll start reviewing your changes.