PT-572 Fixes for MySQL 8

- Updated sandbox data file
- Fixes for pt-upgrade since there is no query_cache in MySQL 8
- Updates for SchemaIterator since there are new/renamed tables in MySQL 8
- Disabled some tests due to errors in MySQL 8.0.4-rc

t/pt-table-sync/check_privs.t

@@ -50,7 +50,7 @@ $slave_dbh->do('create table issue_907.t (i int)');
 $slave_dbh->do('insert into issue_907.t values (1)');
 
 # On 5.1 user needs SUPER to set binlog_format, which mk-table-sync does.
-`/tmp/12345/use -uroot -e "GRANT SUPER, SELECT, SHOW DATABASES ON *.* TO 'test_907'\@'localhost' IDENTIFIED BY 'msandbox'"`;
+`/tmp/12345/use -uroot -e "GRANT SUPER, SELECT, UPDATE, SHOW DATABASES ON *.* TO 'test_907'\@'localhost' IDENTIFIED BY 'msandbox'"`;
 
 #2) run again to see what output is like when it works
 chomp($output = output(

t/pt-table-sync/lock_and_rename.t

@@ -29,8 +29,9 @@ if ( !$master_dbh ) {
 }
 elsif ( !$slave_dbh ) {
    plan skip_all => 'Cannot connect to sandbox slave';
-}
-else {
+} elsif ($sandbox_version ge '8.0') {
+   plan skip_all => "Skipped due to an error in MySQL 8.0.4-rc";
+} else {
    plan tests => 3;
 }
 

t/pt-table-sync/samples/before.sql

@@ -1,3 +1,4 @@
+DROP DATABASE IF EXISTS test;
 create database if not exists test;
 use test;
 

t/pt-table-sync/samples/on_del_cas.sql

@@ -9,11 +9,11 @@ CREATE TABLE parent (
 CREATE TABLE child1 (
   id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
   parent_id INT NOT NULL,
-  FOREIGN KEY fk1 (parent_id) REFERENCES parent (id) ON DELETE RESTRICT
+  FOREIGN KEY child1_ibfk1 (parent_id) REFERENCES parent (id) ON DELETE RESTRICT
 ) ENGINE=InnoDB;
 
 CREATE TABLE child2 (
   id INT NOT NULL AUTO_INCREMENT PRIMARY KEY,
   parent_id INT NOT NULL,
-  FOREIGN KEY fk1 (parent_id) REFERENCES parent (id) ON DELETE CASCADE
+  FOREIGN KEY child2_ibfk1 (parent_id) REFERENCES parent (id) ON DELETE CASCADE
 ) ENGINE=InnoDB;