Add a reverts element where we can add reverts for busted stuff. The nova scheduler bug initially

elements/reverts/extra-data.d/99-nova-scheduling-revert

@@ -0,0 +1,10 @@
+#!/bin/bash
+
+set -eux
+set -o pipefail
+
+# https://review.openstack.org/#/c/107511/
+pushd /opt/stack/nova
+git revert --no-edit 963ad71af4750e28745b6de262da11816b403801 || true
+git reset --hard HEAD
+popd

json-files/fedora-20-undercloud-source.json

@@ -33,6 +33,7 @@
       "common-venv",
       "set-instack-root",
       "undercloud-post-config-source",
+      "reverts",
       "selinux-policy-updates"
     ],
     "hook": [
@@ -51,12 +52,10 @@
       "99-up-to-date",
       "01-yum-keepcache",
       "15-remove-grub",
-      "51-ironicclient",
       "05-fstab-rootfs-label",
       "15-fedora-remove-grub",
-      "51-ironicclient",
-      "05-fstab-rootfs-label",
-      "00-load-selinux-policy"
+      "00-load-selinux-policy",
+      "00-install-and-load-selinux-policy"
     ]
   }
 ]