NetApp fix create vol different size than snapshot

NetApp fix create vol different size than snapshot

This fixes the issue of creating vol of different
size than snapshot and creating cloned vol of
different size than original.

This change adds a lot of additional LUN geometry
and sub-LUN cloning code which is neccesary to
support extreme resizes, since normal resize
operations are limitted to be within a certain factor
of the original LUN size.

Closes-Bug:#1098581

Change-Id: I8652bfaa67c12c790fa80650a051497f70279b9c