Enable Sahara support in vCenter

[Andrey Danin]

We need to verify that Sahara can be used with vCenter environments in Fuel.

Items to be checked:
* Cluster provisioning (done)
* Cinder volumes attachment
* Swift Hadoop integration

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/123130

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/123385

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: stable/5.1
Review: https://review.openstack.org/123386

[OpenStack Infra (hudson-openstack)]

Change abandoned by Nikita Konovalov (<email address hidden>) on branch: master
Review: https://review.openstack.org/123385

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/123130
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=b3e1a37a99363cf8466e31584fd3255d02c0864e
Submitter: Jenkins
Branch: master

commit b3e1a37a99363cf8466e31584fd3255d02c0864e
Author: Nikita Konovalov <email address hidden>
Date: Mon Sep 22 17:51:47 2014 +0400

    Sahara image requirements

    A separate page added to specify Sahara image requirements.

    Change-Id: I056ec30e7ad142cd4249ae4a91dcbdfff654a559
    Fixes-Bug: #1370708

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/123386
Committed: https://git.openstack.org/cgit/stackforge/fuel-docs/commit/?id=c3a961532750ccfc25a43f8f8d9cbc141506d382
Submitter: Jenkins
Branch: stable/5.1

commit c3a961532750ccfc25a43f8f8d9cbc141506d382
Author: Nikita Konovalov <email address hidden>
Date: Tue Sep 23 12:08:48 2014 +0400

    Sahara image requirements

    A separate page added to specify Sahara image requirements.

    Change-Id: I565585218fc3540ea2e97ee7f2c31ec9671c55d9
    Fixes-Bug: #1370708

[Evgeniya Shumakher (eshumakher)]

Nikita, please convert this bug into BP for 6.0. Looks like Sahara on VMware is a feature

[okosse (okosse)]

I checked it on fuel-6.0-56-2014-12-18_01-32-01.iso