Remove option count from sample configuration

This doesn't serve much purpose, and makes it much harder than it
should be to merge multiple patches that change the sample config.

Change-Id: I44895bfbf4a7c9af30040f84b17a97f8e2f4e5b6
Fix tests to work in debug mode

Avoid oslo.cfg errors when running the tests in debug mode, with
run_tests.sh -d, or directly with testtools.

Change-Id: I7c8b24673ac2d502b219a00ce8af93111348b1ff
Remove unused 'initiator' imports

Remove unused 'initiator' imports from driver.py and manager.py

Change-Id: I4bb3099d6099588d242fae7ed92d0bd9f7126fbb
Refactor Nexenta iSCSI driver

1) Rename volume.py to iscsi.py
2) Rename NexentaDriver to NexentaISCSIDriver

DocImpact
Change-Id: I117d881e1f5a70ea50e44c4a409e65961b85978f
VMware: Fixed upload-to-image for available volume

Cinder generally does not allow upload-to-image operation on a volume
that is 'in-use'. This can however be over-ridden using the '--force True'
flag. The VMware driver cannot support upload-to-image when the volume is
in-use. This is a restriction for the VMware driver alone. When the user forces
an upload on a volume that is 'in-use' the Cinder api layer sets the volume
status to 'uploading' and calls into the driver code to upload. In this
scenario the VMware driver needs to fail the operation.

The current driver code here does this check wrongly by looking for volume
status of 'in-use'. Fixing this check to identify an in-use volume correctly.

Fixes bug: 1237338

Change-Id: If54edfdc242a7a1bff442b6bb4c5a9865eede1dc
Merge "Fix tests to work in debug mode"
Merge "VMware: Fixed upload-to-image for available volume"
Merge "Refactor Nexenta iSCSI driver"
Merge "Remove unused 'initiator' imports"
Merge "Remove option count from sample configuration"