xenapi: unable to start VM when dsa key is injected

[John Garbutt]

XenAPI often injects an admin password.

When this is saved, an RSA key is required, and if you have injected a dsa key, the operation fails, and stops you from starting a new VM.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/39265

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/39265
Committed: http://github.com/openstack/nova/commit/bfd963630a1a252d502db3d008d5d2b98bff9b65
Submitter: Jenkins
Branch: master

commit bfd963630a1a252d502db3d008d5d2b98bff9b65
Author: John Garbutt <email address hidden>
Date: Tue Jul 30 12:14:20 2013 +0100

    xenapi: allow non rsa key injection

    Currently if you attempt to inject a dsa key into a server, you are
    unable to start the server because the saving of the password will
    always fail. This ensures the saving of the password is only attempted
    when injecting an rsa based key.

    Fixes bug 1206458
    Change-Id: I85e259c7d61182d32d2661662483237e7ad8feed