Can't create share-network again

[Aleksandr Chirko]

We can create share-network with no problem:
    manila share-network-create --neutron-net-id <net-id> --neutron-subnet-id <subnet-id>

Then after:
    manila share-network-delete <share nw id>

if we try again to create share-network with the same params:
    manila share-network-create --neutron-net-id <same net-id> --neutron-subnet-id <same subnet-id>

we get
    ERROR: Could not save supplied data due to database error

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/68917

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/68917
Committed: https://git.openstack.org/cgit/stackforge/manila/commit/?id=a842c554e699174fdcc3a771c968ac978c4135a8
Submitter: Jenkins
Branch: master

commit a842c554e699174fdcc3a771c968ac978c4135a8
Author: Aleks Chirko <email address hidden>
Date: Fri Jan 24 15:59:29 2014 +0200

    Change manila DB to have working unique constraint

    Because Manila DB uses 'soft delete', we can't use
    unique constaints properly. Solution is to change
    'deleted' column from Boolean to the type of 'id'
    column and write value of 'id' to 'delete'
    on delete operation. To apply unique constr only
    to not deleted records we will be adding
    'deleted' column to every uc from now on.

    Closes-Bug: #1272303
    Change-Id: Ia673b91c7d7f700a25824766486a82f07203f3b6