Unhandled etcd read exception in core plugin

[Thomas Hambleton]

The core plugin wrapper code does not handle an exception during an etcd read of the /gluon directory. This can happen on a new system when there are no objects created. This results in a stack trace showing up in the neutron log file.

The code should not assume the /gluon directory exists and handle the exception appropriately.

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/413307

[OpenStack Infra (hudson-openstack)]

Reviewed: https://review.openstack.org/413307
Committed: https://git.openstack.org/cgit/openstack/gluon/commit/?id=bf09f4ae47d0d643dbe4e72565119cd8f91d6cc3
Submitter: Jenkins
Branch: master

commit bf09f4ae47d0d643dbe4e72565119cd8f91d6cc3
Author: Thomas Hambleton <email address hidden>
Date: Tue Dec 20 18:56:02 2016 -0600

    Fix unhandled etcd read exception

    The core plugin wrapper code did not handle an exception during an etcd read
    of the /gluon directory. This can happen on a new system when there are no
    objects created yet. This resulted in a stack trace showing up in the neutron
    log file.

    The code was modified to handle the execption gracefully.

    Change-Id: I8dd34a86454d145af03a0d71590de5ad4fa54fcb
    Closes-Bug: #1651599