Comment 1 for bug 1645296

Reviewed: https://review.openstack.org/403673
Committed: https://git.openstack.org/cgit/openstack/tripleo-common/commit/?id=0aee2ceb3ca2b26e5271f357b68deca912668f89
Submitter: Jenkins
Branch: master

commit 0aee2ceb3ca2b26e5271f357b68deca912668f89
Author: Dougal Matthews <email address hidden>
Date: Mon Nov 28 12:35:09 2016 +0000

    Convert exceptions to strings when passing them to the Result class

    The Mistral Result class expects the error property to be either a
    string or a dict. Other types, like exceptions, can cause errors in
    mistral which in turn cause a critical failure. See the Mistral bug
    report: https://bugs.launchpad.net/mistral/+bug/1645295

    This change also updates one use of the Result class that doesn't use
    kwargs.

    Change-Id: Ia93f298e5181bae92d7a08468d33c255d38b996a
    Closes-Bug: #1645296