Fix indentation errors in drivers

Just some pylint fixes.

Change-Id: I1f851726a7c8285884121da097be574c447fa39c
Imported Translations from Transifex

Change-Id: I79473cf2987822f655b674bc49ad60ebb840a87f
Storwize: Fix iogrp availability check

Do not check if vdisk_count is greater than zero to determine iogrp
availability. This is wrong, and leads to the driver not being able to
use empty iogrps.

Change-Id: Ia73189a11cfcc0641c1527293675361c4e78443f
Closes-Bug: #1240395
Cinder extension to add used resources in absolute limits

* totalVolumesUsed
* totalGigabytesUsed

DocImpact
Implements: blueprint cinder-used-resources-in-absolute-limits
Change-Id: I525a61043ce2f906c424738ab361ee7396f072b5
Merge "Fix indentation errors in drivers"
Nexenta NFS driver: caching for appliance volroot

Added caching for NexentaStor appliance 'volroot' value.

Change-Id: I3803981cc8c9b6c47dc9fccc6b2414e21d9d6285
Merge "Nexenta NFS driver: caching for appliance volroot"
Merge "Storwize: Fix iogrp availability check"
Merge "Cinder extension to add used resources in absolute limits"
Merge "Imported Translations from Transifex"