This commit catches an exception when looking for a non existing domain

Bringing machine 'default' up with 'libvirt' provider...
/home/teto/vagrant-libvirt/vendor/bundle/ruby/1.9.1/gems/fog-1.20.0/lib/fog/libvirt/requests/compute/list_domains.rb:9:in
`lookup_domain_by_uuid': Call to virDomainLookupByUUID failed: Domain
not found: no domain with matching uuid
'2f76cf99-67f2-4070-b24c-bc048e39c6fd' (Libvirt::RetrieveError) from /home/teto/vagrant-libvirt/vendor/bundle/ruby/1.9.1/gems/fog-1.20.0/lib/fog/libvirt/requests/compute/list_domains.rb:9:in `list_domains'
Catches the following exception to prevent stack from being displayed:
Bringing machine 'default' up with 'libvirt' provider...
/home/teto/vagrant-libvirt/vendor/bundle/ruby/1.9.1/gems/fog-1.20.0/lib/fog/libvirt/models/compute/volume.rb:84:in `default_pool_name': No storage pools are defined (Fog::Errors::Error)
    from /home/teto/vagrant-libvirt/vendor/bundle/ruby/1.9.1/gems/fog-1.20.0/lib/fog/libvirt/models/compute/volume.rb:33:in `initialize'
    from /home/teto/vagrant-libvirt/vendor/bundle/ruby/1.9.1/gems/fog-1.20.0/lib/fog/core/collection.rb:114:in `new'