FEATURE: PCI-4320 - copy of Juno driver

* deleted Folsom Netapp driver(s) because of class name clash
* copied cinder/volume/drivers/netapp/*.py from Juno Cinder (tag 2014.2)
  to nova/volume/netapp/
* note that I have excluded "eseries/" subdirectory in copy.
  I guess we wont need E-Series driver anytime soon
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #1

from cinder.i18n import _
- replaced by dummy

from cinder.openstack.common import log as logging
- simple class rename

from oslo.config import cfg
- Oslo does not exist yet, code is in Nova
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #2

from cinder import exception
- the same class is in Nova, but netapp driver is using
  two extra Exceptions
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #3

from cinder.openstack.common import importutils
from cinder.openstack.common import excutils
- simple class rename

from cinder.openstack.common import timeutils
- class rename plus one new method defined
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #4

from cinder.openstack.common import units
- unit module is missing, backported
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #5

from cinder import context
from cinder import utils
from cinder.volume import driver
- simple class renames
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #6

updated driver's references to itself. Directory hierarchy
is different in Cinder and Nova.

cinder.volume.drivers.netapp -> nova.volume.netapp
FEATURE: PCI-4320 - backport Juno Cinder to Folsom Nova #7

from cinder.volume import utils as volume_utils
- one function had to be backported

from cinder.volume import volume_types
- simple class rename