Use same connection convention of specifying IPs

If we use hostnames, it will fail during name resolution on UNIX systems

mysql-test/suite/perfschema/r/hostcache_ipv4_max_con.result

@@ -563,13 +563,13 @@ disconnect con4c;
 set global max_user_connections = 0;
 set global max_connections = 10;
 flush user_resources;
-connect  tmp_con1,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con2,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con3,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con4,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con5,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con6,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con7,localhost,quota,,test,$MASTER_MYPORT,;
+connect  tmp_con1,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con2,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con3,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con4,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con5,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con6,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con7,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
 connect  con5a,"127.0.0.1",quota,,test,$MASTER_MYPORT,;
 select "Con4a is alive";
 Con4a is alive

mysql-test/suite/perfschema/r/hostcache_ipv6_max_con.result

@@ -563,13 +563,13 @@ disconnect con4c;
 set global max_user_connections = 0;
 set global max_connections = 10;
 flush user_resources;
-connect  tmp_con1,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con2,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con3,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con4,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con5,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con6,localhost,quota,,test,$MASTER_MYPORT,;
-connect  tmp_con7,localhost,quota,,test,$MASTER_MYPORT,;
+connect  tmp_con1,"::1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con2,"::1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con3,"::1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con4,"::1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con5,"::1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con6,"::1",quota,,test,$MASTER_MYPORT,;
+connect  tmp_con7,"::1",quota,,test,$MASTER_MYPORT,;
 connect  con5a,"::1",quota,,test,$MASTER_MYPORT,;
 select "Con4a is alive";
 Con4a is alive

mysql-test/suite/perfschema/t/hostcache_ipv4_max_con.test

@@ -179,13 +179,13 @@ set global max_user_connections = 0;
 set global max_connections = 10;
 flush user_resources;
 
-connect (tmp_con1,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con2,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con3,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con4,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con5,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con6,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con7,localhost,quota,,test,$MASTER_MYPORT,);
+connect (tmp_con1,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con2,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con3,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con4,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con5,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con6,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con7,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
 
 connect (con5a,"127.0.0.1",quota,,test,$MASTER_MYPORT,);
 select "Con4a is alive";

mysql-test/suite/perfschema/t/hostcache_ipv6_max_con.test

@@ -180,13 +180,13 @@ set global max_user_connections = 0;
 set global max_connections = 10;
 flush user_resources;
 
-connect (tmp_con1,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con2,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con3,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con4,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con5,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con6,localhost,quota,,test,$MASTER_MYPORT,);
-connect (tmp_con7,localhost,quota,,test,$MASTER_MYPORT,);
+connect (tmp_con1,"::1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con2,"::1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con3,"::1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con4,"::1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con5,"::1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con6,"::1",quota,,test,$MASTER_MYPORT,);
+connect (tmp_con7,"::1",quota,,test,$MASTER_MYPORT,);
 
 connect (con5a,"::1",quota,,test,$MASTER_MYPORT,);
 select "Con4a is alive";