Updates based on community review.
Updates based on community review.

* Changed 'config' from a list to a string so any valid zonecfg(1M) syntax is accepted.
* Made default state 'present'
* Added 'attached', 'detached' and 'configured' states to allow zones to be moved between hosts.
* Updated documentation and examples.
* Code tidy up and refactoring.

thaim/ansible,thaim/ansible