ISCSIDriver initialized connection uses a hard coded value

[Aviram Bar-Haim]

ISCSIDriver initialize connection is a duplicated function left in kilo to serve drivers that don't use the new targets model.
In Kilo there is a new parameter of iscsi_protocol, that is set to iscsi by default and can be changed to iser in order to enable RDMA.

In order support RDMA in drivers that still inherit from ISCSIDriver, driver_volume_type (https://github.com/openstack/cinder/blob/master/cinder/volume/driver.py#l1575 )
should be set to iscsi_protocol parameter value ('driver_volume_type' = self.configuration.safe_get('iscsi_protocol')) instead of a hard coded value (as in https://github.com/openstack/cinder/blob/326d165d9c7b27517ac349b30c5815f0bed171ce/cinder/volume/targets/iscsi.py#l284 ) until this function duplication will be solved.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/170178

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/170178
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=15b17071629a72e5e23340ba85fc0538a61541eb
Submitter: Jenkins
Branch: master

commit 15b17071629a72e5e23340ba85fc0538a61541eb
Author: Aviram Bar-Haim <email address hidden>
Date: Thu Apr 2 17:37:04 2015 +0300

    Fix ISCSIDriver initialized connection volume type

    ISCSIDriver initialize connection is a duplicated function
    left in kilo to serve drivers that don't use the new targets model.

    In Kilo there is a new parameter of iscsi_protocol, that is set to
    iscsi by default and can be changed to iser in order to enable RDMA.

    In order support RDMA in drivers that still inherit from ISCSIDriver,
    driver_volume_type should be set to iscsi_protocol parameter value
    instead of a hard coded value until this function duplication will be solved.

    Closes-Bug: #1438833

    Change-Id: If51ff933b75bf475c779d2599776f8a83acc08e5