Fix the total_capacity_gb in CloudByte iSCSI cinder driver

[yogeshprasad]

CloudByte iSCSI cinder driver doesn't display the proper value for total_capacity_gb.

Please find the logs.

2015-02-11 16:31:58.702 14405 INFO cinder.volume.drivers.cloudbyte.cloudbyte [req-1623bb6b-922e-4779-b2f6-d1e011da4a76 - - - - -] CloudByte API executed successfully for command [listTsm].
2015-02-11 16:31:58.703 14405 DEBUG cinder.volume.drivers.cloudbyte.cloudbyte [req-1623bb6b-922e-4779-b2f6-d1e011da4a76 - - - - -] CloudByte driver stats: [{'volume_backend_name': 'cb-gold', 'free_capacity_gb': 197.0, 'driver_version': '1.0.0', 'total_capacity_gb': '1T', 'reserved_percentage': 0, 'vendor_name': 'CloudByte', 'storage_protocol': 'iSCSI'}]. get_volume_stats /opt/stack/cinder/cinder/volume/drivers/cloudbyte/cloudbyte.py:951

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/154878

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/154878
Committed: https://git.openstack.org/cgit/openstack/cinder/commit/?id=59c992919064b06daa3c0ac7092d438e527ff7f7
Submitter: Jenkins
Branch: master

commit 59c992919064b06daa3c0ac7092d438e527ff7f7
Author: yogeshprasad <email address hidden>
Date: Wed Feb 11 19:22:33 2015 +0530

    Fixes total_capacity_gb value in CloudByte driver.

    CloudByte storage returns total capacity value in two formats. One is
    numeric and the other is alphanumeric.

    Previously data['total_capacity_gb'] was referring the alphanumeric value
    & now it is referring to the correct numeric value.

    In addition, changes were made to test_cloudbyte.py to unit test
    free_capacity_gb and total_capacity_gb.

    Closes-Bug: 1420746

    Change-Id: I601c2a78c1727bc815771ca26aea928fa2887d09