MDEV-17421: mtr does not restart the server whose parameters were changed

remove tests that rely on specific execution order

mysql-test/suite/galera/r/galera_mtr_restart_t1.result

-weight=111

mysql-test/suite/galera/r/galera_mtr_restart_t2.result

-weight=1

mysql-test/suite/galera/t/galera_mtr_restart_t1.test

-# This test verifies that mtr will restart the mysqld process,
-# whose parameters were changed during the test. The verification
-# itself is carried out in the following galera_mtr_restart_t2
-# test. If mtr restart the mysqld process, then the pc.weight
-# value will be reset to the default ("1"), but if there is no
-# restart, then we will see the changed value ("111") during
-# the next test.
-#
---source include/galera_cluster.inc
---source include/have_innodb.inc
-
-# Save original auto_increment_offset values.
---let $node_1=node_1
---let $node_2=node_2
---source include/auto_increment_offset_save.inc
-
---connection node_2
---let $restart_parameters = --wsrep_provider_options=pc.weight=111;repl.causal_read_timeout=PT90S;evs.suspect_timeout=PT10S;evs.inactive_timeout=PT30S;evs.install_timeout=PT15S
---source include/restart_mysqld.inc
-
---connection node_1
---let $wait_condition = SELECT VARIABLE_VALUE = 2 FROM INFORMATION_SCHEMA.GLOBAL_STATUS WHERE VARIABLE_NAME = 'wsrep_cluster_size';
---source include/wait_condition.inc
-
---connection node_2
---source include/wait_until_ready.inc
-
-# Check that the parameter value really changed:
---let $gp = `SELECT SUBSTR(@@wsrep_provider_options, LOCATE('pc.weight =', @@wsrep_provider_options) + LENGTH('pc.weight = '))`
---let $weight = `SELECT SUBSTR('$gp', 1, LOCATE(';', '$gp') - 1)`
---echo weight=$weight
-
-# Restore original auto_increment_offset values.
---connection node_1
---source include/auto_increment_offset_restore.inc

mysql-test/suite/galera/t/galera_mtr_restart_t2.test

-# This test verifies that mtr will restart the mysqld process,
-# whose parameters were changed during the previous test. If mtr
-# restart the mysqld process, then the pc.weight value will be
-# reset to the default ("1"), but if there is no restart, then
-# we will see the changed value ("111") in this test.
-#
---source include/galera_cluster.inc
---source include/have_innodb.inc
-
---connection node_2
---let $gp = `SELECT SUBSTR(@@wsrep_provider_options, LOCATE('pc.weight =', @@wsrep_provider_options) + LENGTH('pc.weight = '))`
---let $weight = `SELECT SUBSTR('$gp', 1, LOCATE(';', '$gp') - 1)`
---echo weight=$weight