add clone LWRP

This has only been lightly tested but seems to work fine so far.

Depends on #32 since [f957506 references `Pacemaker::Mixins::Resource::Meta`](https://github.com/aspiers/barclamp-pacemaker/commit/f95750671488c9678455f9744d4d8129a42db223#diff-659416946109157a899e2d9a39a21304R8).