iorap: Increase timeout from 66sec to 30min for iorap-functional-tests

inode2filename is a bit slower now so it takes a while for the compiler
to finish. Increase timeout to compensate.

Bug: 150462358
Test: atest iorap-functional-tests
Change-Id: If1e017ad3c2c441b96dceadd91eb340fdf24302c