GTID events are applied without a running server transaction,
we need to set next transaction ID for Wsrep transaction.

The whole Galera cluster now has a single GTID value (including
the server ID throughout the cluster), fix the config accordingly.

Add force restart so that repeated MTR test execution prints
consistent GTID values, otherwise they would have been recovered
from the previous run.
Signed-off-by: Julius Goryavsky <julius.goryavsky@mariadb.com>