Added a mail server VM for DNS stuff.
Fixed tab alignment.
Use the EL7 Puppet agent provisioning script instead of the EL6 script since we're using CentOS 7.0 now instead of 6.5.
Added a DNS metircs VM.
Added a DNS logging (ELK stack) VM.
Added a DNS monitoring (Icinga 2) VM.
Give the DNS logging VM 1GB of RAM instead of 512MB.
Give the DNS metrics VM 1GB of RAM instead of 512 MB.
Whitespace cleanup.
Added a node definition for the DNS mail VM.
Added a node definition for the DNS metrics VM.
Added a node definition for the DNS logging VM.
Added a node definition for the DNS monitoring VM.