Improve serviced pkg boilerplate; especially license and copyright

Make packaging boilerplate look like this:

```
zendev@zendev-VirtualBox:serviced/pkg$ dpkg --info serviced_0.3.70+0.8.0~saucy_amd64.deb              
 Package: serviced
 Version: 0.3.70+0.8.0~saucy
>> License: Apache 2.0
>> Vendor: Zenoss, Inc.
 Architecture: amd64
 Maintainer: Zenoss CM <cm@zenoss.com>
 Installed-Size: 64098
 Depends: nfs-kernel-server, net-tools, nfs-common, lxc-docker (>= 1.0.0), docker-smuggle (>= 2.24)
>> Section: admin
>> Priority: extra
>> Homepage: https://github.com/control-center/serviced
 Description: Zenoss Serviced is a PaaS runtime. It allows users to create, manage and scale
  services in a uniform way.
```
Also, augmenting packaging to include a copyright file in the machine-readable format recommended by Debian packaging guidelines described here:

https://www.debian.org/doc/packaging-manuals/copyright-format/1.0/

The Zenoss Beta License language comes from legal and presumes we have another beta refresh before we go out the door.  I can open a ticket to remove before GA.