Fix create snapshot API in Huawei driver

[zhongjun]

Since "Migrate share" have been merged, The share['id']
is not consistent with share['name']. So can not use 'share_name'
in create_share API and use 'share_id' in create_snapshot API at
the same time. Now change snapshot['share']['share_id']
to snapshot['share_name'] in create_snapshot API.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/222501

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/222501
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=037fc4bbee948fddb95d98594076b15e4d1f174c
Submitter: Jenkins
Branch: master

commit 037fc4bbee948fddb95d98594076b15e4d1f174c
Author: zhongjun <email address hidden>
Date: Fri Sep 11 15:29:05 2015 +0800

    Fix create snapshot API in Huawei driver

    Since "Migrate share" have been merged, The share['id']
    is not consistent with share['name']. So can not use 'share_name'
    in create_share API and use 'share_id' in create_snapshot API at
    the same time. Now change snapshot['share']['share_id']
    to snapshot['share_name'] in create_snapshot API.

    Change-Id: Ieedda9318762ba2c683788f023a87728d7287504
    Closes-Bug: #1494614