What would you like to be added:

The option to specify the number of parallel CNI requests being processed. In a scenario where many pods come to alive at the same time, memory of the multus pods (thick-mode) increases rapidly. Hence, I suggest we add a function to limit the concurrency.

Why is this needed:

This will prevent setting higher memory requests, which are really a waste as they're only required in these bursty scenarios.

Btw, I'm happy to help with the implementation.