Duplicate all the base domain test cases for unique ids and
lifecycle operations against storage pools and networks since
they all follow the same basic rules.

* scripts/storage/0*.t, scripts/networks/0*.t: Checks for basic
  lifecycle operations and UUID/name uniqueness
* lib/Sys/Virt/TCK/NetworkBuilder.pm: Add uuid method
* lib/Sys/Virt/TCK/StoragePoolBuilder.pm: Add uuid  + perms methods
* lib/Sys/Virt/TCK.pm: Add ok_network, create_empty_dir and
   generic_network methods. Blow away 'tck' networks in setup