Inplace Add index with lock=exclusive doesn't generate MLOG_ADD_INDEX redo

Inplace index build using bulk_btr are not redo logged. So server adds MLOG_ADD_INDEX redo to know such case. It is very important for backup tool to know if any transaction happened without redo logging.

When lock=exclusive and algrotithm=inplace is used. Server is not calling

Builder::write_redo

to write MLOG_ADD_INDEX redo.

CREATE TABLE t1(t1_c1 serial,t1_c2 int);
 INSERT into t1(t1_c2) VALUES(1),(4);
 ALTER TABLE t1 ADD INDEX t1_i(t1_c2) , LOCK=EXCLUSIVE, ALGORITHM=INPLACE;

whereas it works fine with LOCK=Default.