Switch vswitch in Puppetfile to use mitaka
Switch vswitch in Puppetfile to use mitaka

The stable/liberty version of the puppet-vswitch module has been removed and it's mature enough that we can use the mitaka version. 

This change is working in my initial tests. I'll be doing more thorough testing, but for now this change gets us past a fatal breakage during installation.
DeploymentsBook/puppet-data,DeploymentsBook/puppet-data