Error share without share network cannot be deleted in generic driver

[Sun Jun]

In generic driver, If we do not specify the "--share-network" while creating a new share(not from snapshot), the share will turn error and the error share can't been deleted(will be "error_deleting").

[How to Reproduce]
1.driver = generic driver;
2.create a share without share-network info , for example: manila create --name $share-name NFS 1
3.manila list ----> the share will be in error status
4.manila delete $share-id ----> the share will be in error_deleting status

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/143929
Committed: https://git.openstack.org/cgit/openstack/manila/commit/?id=34fff5656330c856d06b1658e513324c12de5cd7
Submitter: Jenkins
Branch: master

commit 34fff5656330c856d06b1658e513324c12de5cd7
Author: Sun Jun <email address hidden>
Date: Thu Dec 25 12:56:44 2014 +0800

    Allow deleting share with invalid share server in generic driver

    In generic driver, if we do not specify the "--share-network" while
    creating a new share(not from snapshot), the share will get error state
    and it cannot be deleted(will be in "error_deleting" status).

    Remove decorator "ensure_server" for method "delete_share" that is
    dedicated mostly for share creation and allow delete share with invalid
    share-server in Generic driver.

    Change-Id: Id4f2138507a1b6c6c303837b6bc09c39c86559df
    Closes-Bug: #1405362