Description of problem:
It seems the overcloud deployment fails during the pacemaker deployment with

02:36:30.711 \u001b[1;31mError: /usr/sbin/pcs cluster auth overcloud-controller-0 overcloud-controller-1 overcloud-controller-2 -u hacluster -p znhwdgiBub0FthZt --force returned 1 instead of one of [0]\u001b[0m
02:36:30.711 \u001b[1;31mError: /Stage[main]/Pacemaker::Corosync/Exec[auth-successful-across-all-nodes]/returns: change from notrun to 0 failed: /usr/sbin/pcs cluster auth overcloud-controller-0 overcloud-controller-1 overcloud-controller-2 -u hacluster -p znhwdgiBub0FthZt --force returned 1 instead of one of [0]\u001b[0m
02:36:30.711 \u001b[1;31mWarning: /Stage[main]/Pacemaker::Corosync/Exec[wait-for-settle]: Skipping because of failed dependencies\u001b[0m
02:36:30.711 \u001b[1;31mWarning: /Stage[main]/Pacemaker::Corosync/Notify[pacemaker settled]: Skipping because of failed dependencies\u001b[0m
02:36:30.711 \u001b[1;31mWarning: /Stage[main]/Pacemaker::Stonith/Exec[Disable STONITH]: Skipping because of failed dependencies\u001b[0m

Version-Release number of selected component (if applicable):
core puddle: 2016-03-17.1
director puddle: 2016-03-09.1

How reproducible:
100%

Steps to Reproduce:
1. Deploy with IPv6 in a HA controllers using the puddles listed (latest ones when the bug was filed).