perftune.py: fix regression introduced in df5f74ac
perftune.py: fix regression introduced in df5f74ac

While fixing "IndexError when NIC uses less IRQs than requested" I introduced
a regression by changing the type of 'all_irqs' from 'list' to 'set'.

This raises a "TypeError: 'set' object does not support indexing" exception
on NetPerfTuner.__setup_one_hw_iface method when trying to tune the network.

Signed-off-by: Alexys Jacob <ee25f2b26a23c85eb2940a5214ecb1801c877d19@gentoo.org>
Message-Id: <20170518151219.17738-1-ee25f2b26a23c85eb2940a5214ecb1801c877d19@gentoo.org>

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