Comment 1 for bug 1712322

Reviewed: https://review.openstack.org/496220
Committed: https://git.openstack.org/cgit/openstack/mistral-dashboard/commit/?id=b42b2c4f25b5e7d95d514323608b481d8c05e232
Submitter: Zuul
Branch: master

commit b42b2c4f25b5e7d95d514323608b481d8c05e232
Author: Mateusz Kowalski <email address hidden>
Date: Tue Aug 22 12:33:51 2017 +0200

    Expand parameter list for workflow execution

    Currently one generic field "Input" is shown when executing a workflow.
    This patch checks list of parameters for a workflow and generates
    a Django form according to the results, also prefilling any default
    value.

    In case default value for a parameter is none, field is not marked
    as required.

    Closes-bug: #1712322
    Change-Id: I702d2b196f87e46bc39da00cad509d2f08f5d24c