DNS records for additional local IP addresses

##### ISSUE TYPE
* Feature Idea

##### COMPONENT NAME
* DNS

##### CLOUDSTACK VERSION
/

##### CONFIGURATION
* for customer isolated network

##### OS / ENVIRONMENT
/

##### SUMMARY
For adaptive computing it's important to get use of additional application local IP addresses which you can move between machines in case of a failure of one of the virtual machines or for upgrades.

I can attach an additional IP to a VM using ACS. But I cannot give that a separate name which does not belong to the actual hostname of the VM.

##### STEPS TO REPRODUCE

##### EXPECTED RESULTS
* possibility to add a DNS name for the additional local IP address
* possibility to move an IP from one system to another (no delete and recreate - IP could be taken in the steps between)

##### ACTUAL RESULTS
* currently the additional IP resolves into the same name as the original IP which is the hostname

Comience con el componente DNS de CloudStack y trace cómo las direcciones IP locales adicionales se resuelven actualmente al nombre de host de una VM. Defina cómo se puede asignar un nombre DNS independiente y cómo se puede mover una IP entre máquinas virtuales sin eliminarlas y volver a crearlas; se considera completado cuando ambos resultados esperados funcionan en una red de cliente aislada.

Escrito por el modelo de indexación a partir del texto del issue.