Comment 2 for bug 1188540

Reviewed: https://review.openstack.org/32176
Committed: http://github.com/openstack/nova/commit/834fc60a8ca852be64aaaaeb5ebb3cc0de807fef
Submitter: Jenkins
Branch: master

commit 834fc60a8ca852be64aaaaeb5ebb3cc0de807fef
Author: John Garbutt <email address hidden>
Date: Fri Jun 7 18:11:09 2013 +0100

    xenapi: revisit error handling around calls to agent

    Now we have settings to hint if the agent is present or not,
    and by default we do not check for the agent,
    if the agent is not responding to our calls for its version,
    we can fail the build.

    In environments that need the agent to inject the networking,
    you really want the agent to fail if it is not present.
    If the agent did not inject the networking, the server will
    have no networking.

    However, we can still leave the agent upgrade to silently
    fail, as the agent should be backwards compatible.

    fixes bug 1188540

    Change-Id: I8acdabd8d2bd24b088dad3cd4abec300d0ada3fb