clarify meaning of "server name" when adding minion to salt

[tobiasmcnulty]

In the provisioning docs, in the line:

fab -u <root-user> accept_key:<server-name>

it's not clear to me if it matters how I set "server-name" or what that effect that will have within salt. I picked something and it seemed to work, but a little explanation of where it will end up might be helpful here. E.g., some questions that came to mind for me are:

• Does it matter what I choose? If so, will I be able to change it later?
• Does it need to match the host name of the server?
• Is this how I'll reference the server within Salt, and if so, is it needed anywhere else outside of this line?

[mlavin]

To be clear the server name is not something you get to choose at this point. It must match the name which the minion gives to the master. That is the name must match one of the names of the unaccepted keys on the master. It defaults to the server's hostname but can also be set in the minion configuration.

[vkurup]

I think this can be closed as the provisioning docs no longer have that line, and the key exchange is handled more automatically in the fabfile.