Comment 8 for bug 1690373

As an additional data point via rdo dist-git commit:
commit 943d53e96ef5dce6d4261100a9f00b12e53644c7 (HEAD -> rpm-master, origin/rpm-master, origin/HEAD)
Author: James Slagle <email address hidden>
Date: Sun Jan 8 15:41:58 2017 -0500

    Remove %post script for orc scripts

    All os-refresh-config scripts and os-apply-config templates are now
    delivered via packaging or via Heat SoftwareDeployment's directly. We no
    longer need this
    %post script to resync the scripts from the element manifest on package
    %update.

    Change-Id: Ie205c93a3cdcc3c68668327fde6327cd373a8739

The offending %post was removed in master but not in our openstack-tripleo-image-elements-5.3.0 that is being used here.

Yeah version-locking openstack-tripleo-image-elements should help here (or even better just removing it completely from the image/system, as it is needed only on the undercloud?)