Internal: Creates a new SnapshotLister object. This accepts a VM object.
vm - An instance of VM
Examples:
Fission::Action::SnapshotLister.new @my_vm
Returns a new SnapshotLister object
Internal: List the snapshots for a VM.
Examples
@lister.snapshots.data # => ['snap 1', 'snap 2']
Returns a Response with the result. If successful, the Repsonse‘s data attribute will be an Array of the snapshot names (String). If there is an error, an unsuccessful Response will be returned.
[Validate]