Increased CPU consumption

[LeonidVas]

As a result of constant requests from fiber queue_state_fiber CPU consumption of tarantool at idle time increased from 12% to 33%. Increasing timeout to 0.1 (

queue/queue/abstract/queue_state.lua

Line 79 in 2e01cb5

local rc = pcall(box.ctl.wait_ro, 0.001)

) helps.