MDEV-25884 Tests use environment $USER variable without quotes

These are only 10.4+ tests. 10.2+ tests are pushed into 10.2
and will be merged into 10.4+ independently

mysql-test/main/password_expiration_unix_socket.result

@@ -1,8 +1,8 @@
 #
 # A password cannot expire, if there is no password
 #
-create user USER identified via unix_socket;
-alter user USER password expire;
+create user 'USER' identified via unix_socket;
+alter user 'USER' password expire;
 1
 1
-drop user USER;
+drop user 'USER';

mysql-test/main/password_expiration_unix_socket.test

@@ -9,16 +9,16 @@
 --echo # A password cannot expire, if there is no password
 --echo #
 
---let $replace=create user $USER
---replace_result $replace "create user USER"
---eval create user $USER identified via unix_socket
+--let $replace=create user '$USER'
+--replace_result $replace "create user 'USER'"
+--eval create user '$USER' identified via unix_socket
 
---let $replace=alter user $USER
---replace_result $replace "alter user USER"
---eval alter user $USER password expire
+--let $replace=alter user '$USER'
+--replace_result $replace "alter user 'USER'"
+--eval alter user '$USER' password expire
 
 --exec $MYSQL -u $USER -e 'select 1'
 
---let $replace=drop user $USER
---replace_result $replace "drop user USER"
---eval drop user $USER
+--let $replace=drop user '$USER'
+--replace_result $replace "drop user 'USER'"
+--eval drop user '$USER'

mysql-test/suite/plugins/r/multiauth.result

@@ -1,5 +1,5 @@
 install soname 'auth_ed25519';
-create user USER         identified via unix_socket OR mysql_native_password as password("GOOD");
+create user 'USER'         identified via unix_socket OR mysql_native_password as password("GOOD");
 create user mysqltest1 identified via unix_socket OR mysql_native_password as password("good");
 show create user mysqltest1;
 CREATE USER for mysqltest1@%
@@ -14,8 +14,8 @@ user()	current_user()	database()
 mysqltest1@localhost	mysqltest1@%	test
 # name does not match, password bad = failure
 mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
-drop user USER, mysqltest1;
-create user USER         identified via mysql_native_password as password("GOOD") OR unix_socket;
+drop user 'USER', mysqltest1;
+create user 'USER'         identified via mysql_native_password as password("GOOD") OR unix_socket;
 create user mysqltest1 identified via mysql_native_password as password("good") OR unix_socket;
 show create user mysqltest1;
 CREATE USER for mysqltest1@%
@@ -30,8 +30,8 @@ user()	current_user()	database()
 mysqltest1@localhost	mysqltest1@%	test
 # name does not match, password bad = failure
 mysqltest: Could not open connection 'default': 1698 Access denied for user 'mysqltest1'@'localhost'
-drop user USER, mysqltest1;
-create user USER         identified via unix_socket OR ed25519 as password("GOOD");
+drop user 'USER', mysqltest1;
+create user 'USER'         identified via unix_socket OR ed25519 as password("GOOD");
 create user mysqltest1 identified via unix_socket OR ed25519 as password("good");
 show create user mysqltest1;
 CREATE USER for mysqltest1@%
@@ -46,8 +46,8 @@ user()	current_user()	database()
 mysqltest1@localhost	mysqltest1@%	test
 # name does not match, password bad = failure
 mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
-drop user USER, mysqltest1;
-create user USER         identified via ed25519 as password("GOOD") OR unix_socket;
+drop user 'USER', mysqltest1;
+create user 'USER'         identified via ed25519 as password("GOOD") OR unix_socket;
 create user mysqltest1 identified via ed25519 as password("good") OR unix_socket;
 show create user mysqltest1;
 CREATE USER for mysqltest1@%
@@ -62,8 +62,8 @@ user()	current_user()	database()
 mysqltest1@localhost	mysqltest1@%	test
 # name does not match, password bad = failure
 mysqltest: Could not open connection 'default': 1698 Access denied for user 'mysqltest1'@'localhost'
-drop user USER, mysqltest1;
-create user USER         identified via ed25519 as password("GOOD") OR unix_socket OR mysql_native_password as password("works");
+drop user 'USER', mysqltest1;
+create user 'USER'         identified via ed25519 as password("GOOD") OR unix_socket OR mysql_native_password as password("works");
 create user mysqltest1 identified via ed25519 as password("good") OR unix_socket OR mysql_native_password as password("works");
 show create user mysqltest1;
 CREATE USER for mysqltest1@%
@@ -82,7 +82,7 @@ user()	current_user()	database()
 mysqltest1@localhost	mysqltest1@%	test
 # name does not match, password bad = failure
 mysqltest: Could not open connection 'default': 1045 Access denied for user 'mysqltest1'@'localhost' (using password: YES)
-drop user USER, mysqltest1;
+drop user 'USER', mysqltest1;
 create user mysqltest1 identified via mysql_native_password as password("good") OR mysql_native_password as password("works");
 show create user mysqltest1;
 CREATE USER for mysqltest1@%
@@ -156,7 +156,7 @@ drop user mysqltest1;
 create user mysqltest1 identified via ed25519 as password("good") OR unix_socket OR mysql_native_password as password("works");
 ERROR HY000: Column count of mysql.user is wrong. Expected 3, found 47. Created with MariaDB XX.YY.ZZ, now running XX.YY.ZZ. Please use mysql_upgrade to fix this error
 # switching back from mysql.user to mysql.global_priv
-create user USER         identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
+create user 'USER'         identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
 create user mysqltest1 identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
 update mysql.global_priv set priv=replace(priv, '1234567890123456789012345678901234567890a', 'invalid password');
 flush privileges;
@@ -174,7 +174,7 @@ set password for mysqltest1 = password('bla');
 select user(), current_user(), database();
 user()	current_user()	database()
 mysqltest1@localhost	mysqltest1@%	test
-drop user USER, mysqltest1;
+drop user 'USER', mysqltest1;
 create user mysqltest1 identified via ed25519 as password("good");
 show create user mysqltest1;
 CREATE USER for mysqltest1@%

mysql-test/suite/plugins/t/multiauth.test

@@ -22,13 +22,13 @@ install soname 'auth_ed25519';
 select user(), current_user(), database();
 EOF
 
---let $creplace=create user $USER
---let $dreplace=drop user $USER
+--let $creplace=create user '$USER'
+--let $dreplace=drop user '$USER'
 
 #
 # socket,password
 #
---replace_result $creplace "create user USER"
+--replace_result $creplace "create user 'USER'"
 eval $creplace         identified via unix_socket OR mysql_native_password as password("GOOD");
 create user mysqltest1 identified via unix_socket OR mysql_native_password as password("good");
 show create user mysqltest1;
@@ -39,13 +39,13 @@ show create user mysqltest1;
 --echo # name does not match, password bad = failure
 --error 1
 --exec $try_auth -u mysqltest1 -pbad
---replace_result $dreplace "drop user USER"
+--replace_result $dreplace "drop user 'USER'"
 eval $dreplace, mysqltest1;
 
 #
 # password,socket
 #
---replace_result $creplace "create user USER"
+--replace_result $creplace "create user 'USER'"
 eval $creplace         identified via mysql_native_password as password("GOOD") OR unix_socket;
 create user mysqltest1 identified via mysql_native_password as password("good") OR unix_socket;
 show create user mysqltest1;
@@ -56,13 +56,13 @@ show create user mysqltest1;
 --echo # name does not match, password bad = failure
 --error 1
 --exec $try_auth -u mysqltest1 -pbad
---replace_result $dreplace "drop user USER"
+--replace_result $dreplace "drop user 'USER'"
 eval $dreplace, mysqltest1;
 
 #
 # socket,ed25519
 #
---replace_result $creplace "create user USER"
+--replace_result $creplace "create user 'USER'"
 eval $creplace         identified via unix_socket OR ed25519 as password("GOOD");
 create user mysqltest1 identified via unix_socket OR ed25519 as password("good");
 show create user mysqltest1;
@@ -73,13 +73,13 @@ show create user mysqltest1;
 --echo # name does not match, password bad = failure
 --error 1
 --exec $try_auth -u mysqltest1 -pbad
---replace_result $dreplace "drop user USER"
+--replace_result $dreplace "drop user 'USER'"
 eval $dreplace, mysqltest1;
 
 #
 # ed25519,socket
 #
---replace_result $creplace "create user USER"
+--replace_result $creplace "create user 'USER'"
 eval $creplace         identified via ed25519 as password("GOOD") OR unix_socket;
 create user mysqltest1 identified via ed25519 as password("good") OR unix_socket;
 show create user mysqltest1;
@@ -90,13 +90,13 @@ show create user mysqltest1;
 --echo # name does not match, password bad = failure
 --error 1
 --exec $try_auth -u mysqltest1 -pbad
---replace_result $dreplace "drop user USER"
+--replace_result $dreplace "drop user 'USER'"
 eval $dreplace, mysqltest1;
 
 #
 # ed25519,socket,password
 #
---replace_result $creplace "create user USER"
+--replace_result $creplace "create user 'USER'"
 eval $creplace         identified via ed25519 as password("GOOD") OR unix_socket OR mysql_native_password as password("works");
 create user mysqltest1 identified via ed25519 as password("good") OR unix_socket OR mysql_native_password as password("works");
 show create user mysqltest1;
@@ -109,7 +109,7 @@ show create user mysqltest1;
 --echo # name does not match, password bad = failure
 --error 1
 --exec $try_auth -u mysqltest1 -pbad
---replace_result $dreplace "drop user USER"
+--replace_result $dreplace "drop user 'USER'"
 eval $dreplace, mysqltest1;
 
 #
@@ -158,7 +158,7 @@ create user mysqltest1 identified via ed25519 as password("good") OR unix_socket
 #
 # invalid password,socket
 #
---replace_result $creplace "create user USER"
+--replace_result $creplace "create user 'USER'"
 eval $creplace         identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
 create user mysqltest1 identified via mysql_native_password as '1234567890123456789012345678901234567890a' OR unix_socket;
 update mysql.global_priv set priv=replace(priv, '1234567890123456789012345678901234567890a', 'invalid password');
@@ -172,7 +172,7 @@ show create user mysqltest1;
 --echo # SET PASSWORD helps
 set password for mysqltest1 = password('bla');
 --exec $try_auth -u mysqltest1 -pbla
---replace_result $dreplace "drop user USER"
+--replace_result $dreplace "drop user 'USER'"
 eval $dreplace, mysqltest1;
 
 #