Fix bug in Nexenta NFS driver _do_create_volume

Fix bug in _do_create_volume method of Nexenta NFS volume driver.
NMS call nms.folder.create doesn't support third argument, that is why
this call changed to nms.folder.create_with_opts.

Closes-Bug: #1221946
Change-Id: I712ee2919f1bd117e7a1691979639689d95adc92
Merge "Fix bug in Nexenta NFS driver _do_create_volume"