Sample wsrep.cnf file is not included into .deb packages for Ubuntu 14.04

On some systems PXC comes with sample wsrep.cnf:

vagrant@percona1 ~]$ repoquery -l Percona-XtraDB-Cluster-server-55 |grep cnf |grep wsrep
/usr/share/doc/Percona-XtraDB-Cluster-server-55-5.5.39/wsrep.cnf
/usr/share/percona-xtradb-cluster/wsrep.cnf

But on Ubuntu 14.04 (and maybe other Debiand and Ubuntu versions) it's not there (while it is present in support-files in the source code):

openxs@ao756:~$ sudo find / -name 'wsrep.cnf'
/home/openxs/dbs/pxc/support-files/wsrep.cnf
/home/openxs/bzr/pxc-5.5/Percona-Server/support-files/wsrep.cnf
/home/openxs/bzr/pxc-5.6/support-files/wsrep.cnf
openxs@ao756:~$ dpkg -l | grep -i percona
ii libmysqlclient18 1:5.5.35-rel33.0-611.raring amd64 Percona Server database client library
ii libmysqlclient18-dev 1:5.5.35-rel33.0-611.raring amd64 Percona Server database development files
rc libmysqlclient18.1 1:5.6.15-rel63.0-519.raring amd64 Percona Server database client library
ii libperconaserverclient18 5.5.41-rel37.0-727.trusty amd64 Percona Server database client library
rc libperconaserverclient18.1 5.6.22-71.0-726.trusty amd64 Percona Server database client library
ii percona-server-common-5.5 5.5.41-rel37.0-727.trusty amd64 Percona Server database common files (e.g. /etc/mysql/my.cnf)
rc percona-server-server-5.5 5.5.37-rel35.0-657.saucy amd64 Percona Server database server binaries
rc percona-server-server-5.6 5.6.21-70.1-698.trusty amd64 Percona Server database server binaries
ii percona-toolkit 2.2.13 all Advanced MySQL and system command-line tools
ii percona-xtrabackup 2.2.8-5059-1.trusty amd64 Open source backup tool for InnoDB and XtraDB
ii percona-xtradb-cluster-client-5.5 5.5.39-25.11-816.trusty amd64 Percona XtraDB Cluster database client binaries
ii percona-xtradb-cluster-common-5.5 5.5.39-25.11-816.trusty all Percona XtraDB Cluster database common files (e.g. /etc/mysql/my.cnf)
ii percona-xtradb-cluster-galera-3.x 3.8.3390.trusty amd64 Galera components of Percona XtraDB Cluster
ii percona-xtradb-cluster-server-5.5 5.5.39-25.11-816.trusty amd64 Percona XtraDB Cluster database server binaries
rc percona-xtradb-cluster-server-5.6 5.6.21-25.8-938.trusty amd64 Percona XtraDB Cluster database server binaries
openxs@ao756:~$ cat /etc/issue
Ubuntu 14.04.1 LTS \n \l

openxs@ao756:~$ dpkg-query -L percona-xtradb-cluster-server-5.5 | grep wsrep
/usr/bin/wsrep_sst_mysqldump
/usr/bin/wsrep_sst_rsync
/usr/bin/wsrep_sst_common
/usr/bin/wsrep_sst_xtrabackup-v2
/usr/bin/wsrep_sst_xtrabackup
/usr/share/mysql/wsrep_notify
/usr/bin/wsrep_sst_rsync_wan
openxs@ao756:~$ dpkg-query -L percona-xtradb-cluster-client-5.5 | grep wsrep
openxs@ao756:~$ dpkg-query -L percona-xtradb-cluster-common-5.5 | grep wsrep
openxs@ao756:~$ dpkg-query -L percona-xtradb-cluster-galera-3.x | grep wsrep
openxs@ao756:~$