Add support for Gentoo Linux irqbalance configuration detection.
Add support for Gentoo Linux irqbalance configuration detection.

This allows perftune.py to work well when using the irqbalance
daemon on Gentoo Linux.

Signed-off-by: Alexys Jacob <ee25f2b26a23c85eb2940a5214ecb1801c877d19@gentoo.org>
Acked-by: Vlad Zolotarov <976c0f8d0852ed6439ad273880b400a75a7c41d0@scylladb.com>
Message-Id: <20170509073615.13957-1-ee25f2b26a23c85eb2940a5214ecb1801c877d19@gentoo.org>

syuu1228/seastar,dreamsxin/seastar,avikivity/seastar,scylladb/seastar,syuu1228/seastar,cloudius-systems/seastar,scylladb/seastar,avikivity/seastar,dreamsxin/seastar,avikivity/seastar,cloudius-systems/seastar,dreamsxin/seastar,scylladb/seastar,cloudius-systems/seastar,syuu1228/seastar