Add one more test.

dbms/tests/queries/0_stateless/01075_allowed_client_hosts.reference

+CREATE USER test_user_01075
+CREATE USER test_user_01075
+CREATE USER test_user_01075 HOST NONE
+CREATE USER test_user_01075 HOST LOCAL
+CREATE USER test_user_01075 HOST IP \'192.168.23.15\'
+CREATE USER test_user_01075 HOST IP \'2001:db8:11a3:9d7:1f34:8a2e:7a0:765d\'
+CREATE USER test_user_01075 HOST LOCAL, IP \'2001:db8:11a3:9d7:1f34:8a2e:7a0:765d\'
+CREATE USER test_user_01075 HOST LOCAL
+CREATE USER test_user_01075 HOST NONE
+CREATE USER test_user_01075 HOST LIKE \'@.somesite.com\'
+CREATE USER test_user_01075 HOST NAME REGEXP \'.*.anothersite.com\'
+CREATE USER `test_user_01075_x@localhost` HOST LOCAL
+CREATE USER test_user_01075_x
+CREATE USER `test_user_01075_x@192.168.23.15` HOST LIKE \'192.168.23.15\'

dbms/tests/queries/0_stateless/01075_allowed_client_hosts.sql

+DROP USER IF EXISTS test_user_01075, test_user_01075_x, test_user_01075_x@localhost, test_user_01075_x@'192.168.23.15';
+
+CREATE USER test_user_01075;
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST ANY;
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST NONE;
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST LOCAL;
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST IP '192.168.23.15';
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST IP '2001:0db8:11a3:09d7:1f34:8a2e:07a0:765d';
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 ADD HOST IP '127.0.0.1';
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 REMOVE HOST IP '2001:0db8:11a3:09d7:1f34:8a2e:07a0:765d';
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 REMOVE HOST NAME 'localhost';
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST LIKE '@.somesite.com';
+SHOW CREATE USER test_user_01075;
+
+ALTER USER test_user_01075 HOST NAME REGEXP '.*\.anothersite\.com';
+SHOW CREATE USER test_user_01075;
+
+DROP USER test_user_01075;
+
+CREATE USER test_user_01075_x@localhost;
+SHOW CREATE USER test_user_01075_x@localhost;
+
+ALTER USER test_user_01075_x@localhost RENAME TO test_user_01075_x@'@';
+SHOW CREATE USER test_user_01075_x;
+
+ALTER USER test_user_01075_x RENAME TO test_user_01075_x@'192.168.23.15';
+SHOW CREATE USER 'test_user_01075_x@192.168.23.15';
+
+DROP USER 'test_user_01075_x@192.168.23.15';