Fix perfschema.hostcache_ipv4_max_con

Also fix perfschema.hostcache_ipv6_max_con.
The test case makes use of a debug switch to execute some special code.
The code does hostname replacement. Every hostname sent during connect
phase becomes santa.claus.ipv4.example.com (or ipv6). This causes a
connection from root@localhost to fail, as root is not registered as
santa claus user. The failure is only apparent on Windows as Unix
systems make use of sockets, which bypass the name resolution check
entirely.

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,root,,;
-connect  tmp_con2,localhost,root,,;
-connect  tmp_con3,localhost,root,,;
-connect  tmp_con4,localhost,root,,;
-connect  tmp_con5,localhost,root,,;
-connect  tmp_con6,localhost,root,,;
-connect  tmp_con7,localhost,root,,;
+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,$MASTER_MYPORT,;
 connect  con5a,"127.0.0.1",quota,,test,$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,root,,;
-connect  tmp_con2,localhost,root,,;
-connect  tmp_con3,localhost,root,,;
-connect  tmp_con4,localhost,root,,;
-connect  tmp_con5,localhost,root,,;
-connect  tmp_con6,localhost,root,,;
-connect  tmp_con7,localhost,root,,;
+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,$MASTER_MYPORT,;
 connect  con5a,"::1",quota,,test,$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,root,,);
-connect (tmp_con2,localhost,root,,);
-connect (tmp_con3,localhost,root,,);
-connect (tmp_con4,localhost,root,,);
-connect (tmp_con5,localhost,root,,);
-connect (tmp_con6,localhost,root,,);
-connect (tmp_con7,localhost,root,,);
+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 (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,root,,);
-connect (tmp_con2,localhost,root,,);
-connect (tmp_con3,localhost,root,,);
-connect (tmp_con4,localhost,root,,);
-connect (tmp_con5,localhost,root,,);
-connect (tmp_con6,localhost,root,,);
-connect (tmp_con7,localhost,root,,);
+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 (con5a,"::1",quota,,test,$MASTER_MYPORT,);
 select "Con4a is alive";