Update and delete zone records

Records deletion : delete records by name, value or type for a zone file

Records update : update an entire zone file from a file. Use a file is a good way to have a short command line and edit multiple records in one shot.

Use case : 

`gandi zone list example.com --output`

`vi example.com_123465`
[...] Update zone file

`gandi zone update example.com --file example.com_123465`

Push and activate the new zone file