Disable batch delete button when keypairs are deleted

[wei.ying]

Env: devstack master branch

Steps to reproduce:

1. Go to Porject/Compute Key Pairs panel.
2. Create two key pairs, such as "keypair 1","keypair 2".
3. Select "keypair 1","keypair 2" and click batch "Delete Key Pairs" button.

After deleting keypairs, we will see that batch "Delete Key Pairs" button is not disabled and still can be clicked.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/529932

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/529932
Committed: https://git.openstack.org/cgit/openstack/horizon/commit/?id=ab57c0937df8b870440974fd78dfe4557c104dbb
Submitter: Zuul
Branch: master

commit ab57c0937df8b870440974fd78dfe4557c104dbb
Author: wei.ying <email address hidden>
Date: Fri Nov 17 16:45:32 2017 +0800

    Fix batch delete key pairs button isn't disabled when the key pair has deleted

    When the key pair has deleted by the batch delete button, the batch
    delete button isn't disabled and still can be clicked.

    Since whatever in the keypairs panel or on key pair details page,
    After the key pair is deleted, the url will be redirected to the
    key pairs panel. The correct way is that only the key pair is deleted
    on the details page, and it needs to be redirected to the key pairs
    panel.

    Change-Id: Ie3041cc70bde84e9753be41f0a80d04534ffdf44
    Closes-Bug:#1739871

[OpenStack Infra (hudson-openstack)]

This issue was fixed in the openstack/horizon 14.0.0.0b1 development milestone.