Comment 7 for bug 1709189

Reviewed: https://review.openstack.org/492554
Committed: https://git.openstack.org/cgit/openstack/charm-keystone/commit/?id=ee45612e7c3dd78712a0ad29576de557d144a1fd
Submitter: Zuul
Branch: master

commit ee45612e7c3dd78712a0ad29576de557d144a1fd
Author: James Page <email address hidden>
Date: Thu Aug 10 15:22:50 2017 +0100

    pki: conditional enablement of signing section

    Only enable the [signing] section of the keystone configuration
    if PKI token format is in use; other token formats don't have
    support for token revocation retrieval.

    Note that PKI format tokens are no longer supported >= Pike.

    Change-Id: I8179ecc5d37d866588147f639ebc77a870408dfe
    Closes-Bug: 1709189