Fix ndb_restore_conv_more mtr failure on Ubuntu. Grep

incorrectly detects input as binary file due to UTF-8
characters. Command returns "Binary file(standard input)
matches" instead of matching rows. Modified grep command
to always treat input as text, not binary.

Author: Priyanka Sangam

mysql-test/suite/ndb/t/ndb_restore_conv_more.test

@@ -601,7 +601,7 @@ create table text2text(id int primary key, val tinytext character set utf8)engin
 --exec $NDB_RESTORE --no-defaults -b $the_backup_id -n 2 -r --promote-attributes --lossy-conversions $NDB_BACKUPS-$the_backup_id >> $NDB_TOOLS_OUTPUT
 
 --echo # run ndb_select_all to see charset-aware truncation in ndb
---exec $NDB_SELECT_ALL -d test text2text | grep "11111"
+--exec $NDB_SELECT_ALL -d test text2text | grep --text "11111"
 
 --echo # run mysql select to see charset-aware truncation in mysqld
 --echo # truncation in pk-based read