FINALLY finish the cloud controller tutorial

This tutorial covers how to set up the Salt Virt system in detail,
this tutoral could still use some work, btu it should be enough
for people to start using Salt Virt quickly!

We also want to make sure that the path to getting a private cloud
up in Salt is as easy as possible. So we will need to keep looking
at how to make this easy!
Copy edit cloud controller doc
Merge pull request #8628 from UtahDave/develop

Fix several edge cases where dhcp and static ip and dns settings weren't handled correctly on Windows.
Merge pull request #8627 from holmboe/patch-1

Copy edit cloud controller doc
Actually allow joining a domain