After initial deployment using OpenStack Director we still see one controller use a different `--wsrep-cluster-address=gcomm` address than the others, is this expected?

Issue

After initial deployment using OpenStack Director we still see one controller use a different --wsrep-cluster-address=gcomm address than the others, is this expected?

• on overcloud-controller-2 we see --wsrep-cluster-address=gcomm:// :

[heat-admin@overcloud-controller-2 ~]$ ps -ef |grep mysql
root      6195     1  0 Oct10 ?        00:00:00 /bin/sh /usr/bin/mysqld_safe --defaults-file=/etc/my.cnf --pid-file=/var/run/mysql/mysqld.pid --socket=/var/lib/mysql/mysql.sock --datadir=/var/lib/mysql --log-error=/var/log/mysqld.log --user=mysql --open-files-limit=16384 --wsrep-cluster-address=gcomm://
mysql     7095  6195  0 Oct10 ?        00:24:35 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --wsrep-provider=/usr/lib64/galera/libgalera_smm.so --wsrep-cluster-address=gcomm:// --log-error=/var/log/mysqld.log --open-files-limit=16384 --pid-file=/var/run/mysql/mysqld.pid --socket=/var/lib/mysql/mysql.sock --port=3306 --wsrep_start_position=32e61158-7fcf-11e6-89a6-f6d8d9f66b61:3174972

• while the other controllers show --wsrep-cluster-address=gcomm://overcloud-controller-0,overcloud-controller-1,overcloud-controller-2 :

[root@overcloud-controller-0 ~]# ps -ef |grep mysql
root      6995     1  0 Oct10 ?        00:00:00 /bin/sh /usr/bin/mysqld_safe --defaults-file=/etc/my.cnf --pid-file=/var/run/mysql/mysqld.pid --socket=/var/lib/mysql/mysql.sock --datadir=/var/lib/mysql --log-error=/var/log/mysqld.log --user=mysql --open-files-limit=16384 --wsrep-cluster-address=gcomm://overcloud-controller-0,overcloud-controller-1,overcloud-controller-2
mysql     7946  6995  1 Oct10 ?        00:41:45 /usr/libexec/mysqld --defaults-file=/etc/my.cnf --basedir=/usr --datadir=/var/lib/mysql --plugin-dir=/usr/lib64/mysql/plugin --user=mysql --wsrep-provider=/usr/lib64/galera/libgalera_smm.so --wsrep-cluster-address=gcomm://overcloud-controller-0,overcloud-controller-1,overcloud-controller-2 --log-error=/var/log/mysqld.log --open-files-limit=16384 --pid-file=/var/run/mysql/mysqld.pid --socket=/var/lib/mysql/mysql.sock --port=3306 --wsrep_start_position=32e61158-7fcf-11e6-89a6-f6d8d9f66b61:3174972