Benchmark for daemon mode is to be added in next commit.
Current results on my machine for 'ip a':
method : min avg max dev
ip a : 3.701ms 4.966ms 12.720ms 1.206ms
sudo ip a : 11.531ms 13.538ms 19.685ms 1.525ms
sudo rootwrap conf ip a : 92.253ms 119.431ms 211.236ms 17.948ms
daemon.run('ip a') : 6.718ms 9.914ms 189.873ms 18.201ms
Implements: blueprint rootwrap-daemon-mode
Change-Id: Iace26738f910a18a5d1d3479fad949027e5a3816