/usr/lib/mysql-testsuite/t/myisam-blob-master.opt is in percona-server-test-5.6 5.6.22-rel71.0-0ubuntu4.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 | --max-allowed-packet=24M --loose-skip-innodb --key-buffer-size=1M --server-id=0
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