Use router domain suffix for basic networking

Since basic networking doesn't provide the required FQDN domain necessary to define the appropriate hostname when deleting the node & client from Chef, the router domain suffix that matches the given host is used as a fallback.
Merge pull request #22 from CloudStack-extras/fqdn-basic-network-fix

Use router domain suffix for basic networking
This options is also open for a very long time. I will merge the code because it seems fine, but cloud use some help with the testing of the code.