MDEV-8151 : wsrep.foreign_key, wsrep.pool_of_threads,

.. wsrep.binlog_format, wsrep.mdev_6832 fail in buildbot

Galera-3.9 logs an additional warning in the error log if
it fails to find gvwstate.dat file. Update wsrep/suite.pm.

mysql-test/suite/wsrep/suite.pm

@@ -27,6 +27,7 @@ push @::global_suppressions,
      qr(WSREP: Could not open saved state file for reading: ),
      qr(WSREP: option --wsrep-casual-reads is deprecated),
      qr(WSREP: --wsrep-casual-reads=ON takes precedence over --wsrep-sync-wait=0),
+     qr|WSREP: access file\(gvwstate.dat\) failed\(No such file or directory\)|,
    );
 
 $ENV{PATH}="$epath:$ENV{PATH}";