Verified on 9.0 ISO #465.

Steps to verify:
1. Create an HA environment
2. Kill mysqld process on controller
3. Check logs mysqld_safe.log and ocf-mysql-wss.log (these logs are located in master node in /var/log/remote/node-*.test.domain.local/ folder)

Actual results:
As we can see in logs, when a galera node is down, it prefers the wsrep-recover output to the grastate.dat file content.
===mysqld_safe.log:===
2016-06-17T11:43:52.848814+00:00 notice:  mysqld from pid file /var/run/resource-agents/mysql-wss/mysql-wss.pid ended
2016-06-17T11:44:47.863552+00:00 notice:  Starting mysqld daemon with databases from /var/lib/mysql
2016-06-17T11:44:47.875919+00:00 notice:  WSREP: Running position recovery with --log_error='/var/lib/mysql/wsrep_recovery.bIUXl1' --pid-file='/var/lib/mysql/node-29.test.domain.local-recover.pid'
2016-06-17T11:44:50.014964+00:00 notice:  WSREP: Recovered position 9c599751-3397-11e6-9a85-9a742d73be17:15780

===ocf-mysql-wss.log:===
2016-06-17T11:44:42.089812+00:00 err:  ERROR: p_mysqld: mysql_status(): MySQL is not running
2016-06-17T11:44:47.190665+00:00 info:  INFO: p_mysqld: get_node_gtid(): No GTID for node-29.test.domain.local
2016-06-17T11:44:47.199153+00:00 info:  INFO: p_mysqld: validate_gtid(): GTID OK: 9c599751-3397-11e6-9a85-9a742d73be17:15780
2016-06-17T11:44:47.203796+00:00 info:  INFO: p_mysqld: update_node_gtid(): Galera GTID: 9c599751-3397-11e6-9a85-9a742d73be17:15780
2016-06-17T11:44:47.315278+00:00 info:  INFO: p_mysqld: mysql_start(): Starting MySQL
2016-06-17T11:44:47.336544+00:00 info:  INFO: p_mysqld: check_if_sst(): No signs of SST found
2016-06-17T11:44:47.341930+00:00 info:  INFO: p_mysqld: mysql_status(): PIDFile /var/run/resource-agents/mysql-wss/mysql-wss.pid of MySQL server not found. Sleeping for 2 seconds. 0 retries left
2016-06-17T11:44:49.351335+00:00 info:  INFO: p_mysqld: mysql_status(): MySQL is not running
2016-06-17T11:44:52.377564+00:00 info:  INFO: p_mysqld: check_if_sst(): MySQL process 26148 found
2016-06-17T11:44:52.427604+00:00 info:  INFO: p_mysqld: check_if_sst(): SST is in progress
2016-06-17T11:44:52.432879+00:00 info:  INFO: p_mysqld: mysql_start(): MySQL started

[root@nailgun remote]# shotgun2 short-report
cat /etc/fuel_build_id:
 465
cat /etc/fuel_build_number:
 465
cat /etc/fuel_release:
 9.0
cat /etc/fuel_openstack_version:
 mitaka-9.0
rpm -qa | egrep 'fuel|astute|network-checker|nailgun|packetary|shotgun':
 fuel-release-9.0.0-1.mos6349.noarch
 fuel-misc-9.0.0-1.mos8454.noarch
 python-packetary-9.0.0-1.mos140.noarch
 fuel-bootstrap-cli-9.0.0-1.mos285.noarch
 fuel-migrate-9.0.0-1.mos8454.noarch
 shotgun-9.0.0-1.mos90.noarch
 fuel-notify-9.0.0-1.mos8454.noarch
 nailgun-mcagents-9.0.0-1.mos750.noarch
 python-fuelclient-9.0.0-1.mos325.noarch
 fuel-9.0.0-1.mos6349.noarch
 fuel-utils-9.0.0-1.mos8454.noarch
 fuel-setup-9.0.0-1.mos6349.noarch
 fuel-provisioning-scripts-9.0.0-1.mos8742.noarch
 fuel-library9.0-9.0.0-1.mos8454.noarch
 network-checker-9.0.0-1.mos74.x86_64
 fuel-agent-9.0.0-1.mos285.noarch
 fuel-ui-9.0.0-1.mos2717.noarch
 fuel-ostf-9.0.0-1.mos935.noarch
 fuelmenu-9.0.0-1.mos274.noarch
 fuel-nailgun-9.0.0-1.mos8742.noarch
 rubygem-astute-9.0.0-1.mos750.noarch
 fuel-mirror-9.0.0-1.mos140.noarch
 fuel-openstack-metadata-9.0.0-1.mos8742.noarch