Bug#32025 ndb_waiter does too many roundtrips to ndb_mgmd

 - fix test failures that was already there but now are
   more consistent when the 1 second sleep has been removed from
   ndb_waiter

mysql-test/include/ndb_wait_connected.inc

+# Check that mysqld has reconnected to ndbd after
+# restart of ndbd
+#
+--disable_query_log
+--disable_result_log
+let $mysql_errno= 1;
+let $counter= 600;
+while ($mysql_errno)
+{
+  --error 0,157
+  CREATE TABLE ndb_wait_connected (a int primary key);
+  if ($mysql_errno)
+  {
+    if (!$counter)
+    {
+      die Failed waiting for mysqld to reconnect to ndbd;
+    }
+    dec $counter;
+    --sleep 0.1
+  }
+}
+DROP TABLE ndb_wait_connected;
+--enable_query_log
+--enable_result_log
+
+

mysql-test/t/ndb_autodiscover.test

@@ -491,6 +491,7 @@ select * from t1;
 select * from t1;
 --exec $NDB_MGM --no-defaults -e "all start" > /dev/null
 --exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults > /dev/null
+--source include/ndb_wait_connected.inc
 use test;
 drop database test_only_ndb_tables;
 

mysql-test/t/ndb_autodiscover3.test

@@ -25,6 +25,13 @@ insert into t1 values (1);
 --exec $NDB_MGM --no-defaults -e "all restart" >> $NDB_TOOLS_OUTPUT
 --exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults -c $connect_str >> $NDB_TOOLS_OUTPUT
 
+# Create separate connection and use that for detecting
+# when mysqld has reconnected to ndbd
+connect (ndb_wait_con,127.0.0.1,root,,test,$MASTER_MYPORT,);
+--source include/ndb_wait_connected.inc
+disconnect ndb_wait_con;
+connection server1;
+
 --error 1297
 insert into t1 values (2);
 --error 1296
@@ -44,6 +51,7 @@ select * from t2 order by a limit 3;
 --exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults -c $connect_str >> $NDB_TOOLS_OUTPUT
 
 --connection server2
+--source include/ndb_wait_connected.inc
 create table t2 (a int key) engine=ndbcluster;
 insert into t2 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);
 select * from t2 order by a limit 3;
@@ -58,6 +66,7 @@ select * from t2 order by a limit 3;
 --exec $NDB_TOOLS_DIR/ndb_waiter --no-defaults -c $connect_str >> $NDB_TOOLS_OUTPUT
 
 --connection server1
+--source include/ndb_wait_connected.inc
 show tables;
 create table t2 (a int key) engine=ndbcluster;
 insert into t2 values (1),(2),(3),(4),(5),(6),(7),(8),(9),(10);