Set extra config options to dnsmaster2.
Use the corect directory on the CentOS VM.
Unset the options from dnsslave1; they were erroneously applied; instead, apply them to dnsmaster2.
Merge branch 'master' of github.com:nickchappell/vagrantfiles
Use NFS for mounting the shared folders.
Added a Vagrant project for Cobbler.
Added a Vagrant project for Spacewalk.