MDEV-27912 Fixing inconsistency w.r.t. expect files in tests.

mtr uses group suffix, but some existing inc and test files use
server_id for expect files. This patch aims to fix that.

For spider:

With this change we will not have to maintain a separate version of
restart_mysqld.inc for spider, that duplicates code, just because
spider tests use different names for expect files, and shutdown_mysqld
requires magical names for them.

With this change spider tests will also be able to use other features
provided by restart_mysqld.inc without code duplication, like the
parameter $restart_parameters (see e.g. the testcase mdev_29904.test
in commit ef1161e5d4f).

Tests run after this change: default, spider, rocksdb, galera, using
the following command

mtr --parallel=auto --force --max-test-fail=0 --skip-core-file
mtr --suite spider,spider/*,spider/*/* \
    --skip-test="spider/oracle.*|.*/t\..*" --parallel=auto --big-test \
    --force --max-test-fail=0 --skip-core-file
mtr --suite galera --parallel=auto
mtr --suite rocksdb --parallel=auto

mysql-test/suite/innodb/t/alter_crash.test

@@ -51,8 +51,8 @@ let $MYSQLD_DATADIR= `select @@datadir`;
 let datadir= `select @@datadir`;
 
 # These are from include/shutdown_mysqld.inc and allow to call start_mysqld.inc
---let $_server_id= `SELECT @@server_id`
---let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect
+--let $_expect_file_name= `select regexp_replace(@@tmpdir, '^.*/','')`
+--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/$_expect_file_name.expect
 
 --echo #
 --echo # Bug #14669848 CRASH DURING ALTER MAKES ORIGINAL TABLE INACCESSIBLE

mysql-test/suite/innodb/t/innodb-alter-tempfile.test

@@ -29,8 +29,8 @@ call mtr.add_suppression("InnoDB could not find key no 1 with name f2 from dict
 
 let datadir= `select @@datadir`;
 
---let $_server_id= `SELECT @@server_id`
---let $_expect_file_name=$MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect
+--let $_expect_file_name= `select regexp_replace(@@tmpdir, '^.*/','')`
+--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/$_expect_file_name.expect
 
 CREATE TABLE t1 (f1 INT NOT NULL, f2 INT NOT NULL) ENGINE=innodb;
 SET debug_dbug='+d,innodb_alter_commit_crash_before_commit';

mysql-test/suite/innodb/t/innodb-change-buffer-recovery.test

@@ -25,8 +25,8 @@ CREATE TABLE t1(
 	INDEX(b))
 ENGINE=InnoDB STATS_PERSISTENT=0;
 
---let $_server_id= `SELECT @@server_id`
---let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect
+--let $_expect_file_name= `select regexp_replace(@@tmpdir, '^.*/','')`
+--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/$_expect_file_name.expect
 
 # The flag innodb_change_buffering_debug is only available in debug builds.
 # It instructs InnoDB to try to evict pages from the buffer pool when

mysql-test/suite/innodb/t/innodb-wl5522-debug.test

@@ -37,8 +37,8 @@ SET GLOBAL innodb_file_per_table = 1;
 CREATE TABLE t1 (c1 INT) ENGINE = InnoDB;
 INSERT INTO t1 VALUES(1),(2),(3);
 
---let $_server_id= `SELECT @@server_id`
---let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect
+--let $_expect_file_name= `select regexp_replace(@@tmpdir, '^.*/','')`
+--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/$_expect_file_name.expect
 
 --exec echo wait > $_expect_file_name
 SET SESSION debug_dbug="+d,ib_discard_before_commit_crash";

mysql-test/suite/innodb/t/purge_thread_shutdown.test

@@ -12,8 +12,8 @@ select user,state from information_schema.processlist order by 2;
 set global debug_dbug='+d,only_kill_system_threads';
 set global innodb_fast_shutdown=0;
 
-let $_server_id= `SELECT @@server_id`;
-let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect;
+--let $_expect_file_name= `select regexp_replace(@@tmpdir, '^.*/','')`
+--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/$_expect_file_name.expect
 exec echo "wait" > $_expect_file_name;
 send shutdown;
 

mysql-test/suite/innodb/t/redo_log_during_checkpoint.test

@@ -30,8 +30,8 @@ while ($i)
 }
 --enable_query_log
 
---let $_server_id= `SELECT @@server_id`
---let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/mysqld.$_server_id.expect
+--let $_expect_file_name= `select regexp_replace(@@tmpdir, '^.*/','')`
+--let $_expect_file_name= $MYSQLTEST_VARDIR/tmp/$_expect_file_name.expect
 --exec echo "wait" > $_expect_file_name
 
 SET debug_dbug = '+d,increase_mtr_checkpoint_size';

mysql-test/suite/innodb/t/restart.test

@@ -110,8 +110,6 @@ SET GLOBAL innodb_buffer_pool_size = @innodb_buffer_pool_size_orig;
 --echo #
 
 --let MYSQLD_DATADIR= `SELECT @@datadir`
---let SERVER_ID= `SELECT @@server_id`
---let EXPECT_FILE_NAME= $MYSQLTEST_VARDIR/tmp/mysqld.$SERVER_ID.expect
 
 --source include/shutdown_mysqld.inc
 

mysql-test/suite/innodb/t/temporary_table.test

@@ -11,7 +11,7 @@
 --source include/no_valgrind_without_big.inc
 
 --disable_query_log
-call mtr.add_suppression("Can't create/write to file '/dev/null/nonexistent/ib");
+call mtr.add_suppression("Can't create/write to file '/dev/null/.*/ib");
 call mtr.add_suppression("InnoDB: Unable to create temporary file");
 call mtr.add_suppression("last file in setting innodb_temp_data_file_path");
 call mtr.add_suppression("The table 't1' is full");
@@ -134,7 +134,7 @@ AND support IN ('YES', 'DEFAULT', 'ENABLED');
 # We cannot use include/restart_mysqld.inc in this particular test,
 # because SHOW STATUS would fail due to unwritable (nonexistent) tmpdir.
 --source include/shutdown_mysqld.inc
---exec echo "restart: --tmpdir=/dev/null/nonexistent" > $_expect_file_name
+--exec echo "restart: --tmpdir=/dev/null/$MYSQL_TMP_DIR" > $_expect_file_name
 --enable_reconnect
 --disable_result_log
 --disable_query_log