Add mysql-test/std_data/mysql_upgrade/* for MDEV-6916

mysql-test/std_data/mysql_upgrade/v1.frm

+TYPE=VIEW
+query=select `test`.`t1`.`a` AS `a` from `test`.`t1`
+md5=5e6eaf216e7b016fcedfd4e1113517af
+updatable=0
+algorithm=1
+definer_user=root
+definer_host=localhost
+suid=2
+with_check_option=0
+timestamp=2014-12-11 15:26:20
+create-version=1
+source=select a from t1
+client_cs_name=utf8
+connection_cl_name=utf8_general_ci
+view_body_utf8=select `test`.`t1`.`a` AS `a` from `test`.`t1`

mysql-test/std_data/mysql_upgrade/v2.frm

+TYPE=VIEW
+query=select `test`.`t1`.`a` AS `a` from `test`.`t1`
+md5=5e6eaf216e7b016fcedfd4e1113517af
+updatable=1
+algorithm=2
+definer_user=root
+definer_host=localhost
+suid=2
+with_check_option=0
+timestamp=2014-12-11 15:26:29
+create-version=1
+source=select a from t1
+client_cs_name=utf8
+connection_cl_name=utf8_general_ci
+view_body_utf8=select `test`.`t1`.`a` AS `a` from `test`.`t1`

mysql-test/std_data/mysql_upgrade/v3.frm

+TYPE=VIEW
+query=select `test`.`t1`.`a` AS `a` from `test`.`t1`
+md5=5e6eaf216e7b016fcedfd4e1113517af
+updatable=0
+algorithm=0
+definer_user=root
+definer_host=localhost
+suid=2
+with_check_option=0
+timestamp=2014-12-11 15:26:20
+create-version=1
+source=select a from t1
+client_cs_name=utf8
+connection_cl_name=utf8_general_ci
+view_body_utf8=select `test`.`t1`.`a` AS `a` from `test`.`t1`

mysql-test/std_data/mysql_upgrade/v4.frm

+TYPE=VIEW
+query=select `test`.`t1`.`a` AS `a` from `test`.`t1`
+md5=5e6eaf216e7b016fcedfd4e1113517a0
+updatable=1
+algorithm=0
+definer_user=root
+definer_host=localhost
+suid=2
+with_check_option=0
+timestamp=2015-02-08 19:21:14
+create-version=1
+source=select a from t1
+client_cs_name=latin1
+connection_cl_name=latin1_swedish_ci
+view_body_utf8=select `test`.`t1`.`a` AS `a` from `test`.`t1`
+mariadb-version=50542