Simulation.Inject to have control over initial delay of scenario instances

[michaelplavnik]

This issue is a follow up on #747.

In its current form one can construct simulation as Simulation.Inject(1_000, TimeSpan.FromSeconds(10), TimeSpan.FromMinutes(30)).
This simulation will inject 1000 scenario instances every 10 seconds and each scenario instance will have random delay between zero to 10 seconds.

Proposed change introduces floating parameter with range [0..1] and default equal to 1.0 that will control how much of the injection interval is used for delay. Thus, when value of the parameter is 1, behavior is identical to current, when value is zero, there is no initial delay at all, and if value is 0.5 then initial delay is random between 0 and 5 seconds (in the example above).

[AntyaDev]

Hi @michaelplavnik
Can you please try NBomber v5.8.0?
"In this version, we reduced randomness to a maximum of 1 second. So even if you specify injectInterval = 10 sec, we’ll apply randomness within a [0..1] second range. For your case with Simulation.Inject(1_000, TimeSpan.FromSeconds(10)), it should work well."