setBulkOptions not working for lingerMs

[adrienbu]

The lingerMs option is not working when using setBulkOptions.

Indeed, when using it, it sets the varaiable _bulkLingerMs. However, the only moment this variable is used is at script first launch

var _lingerManager = createLingerManager(_bulkLingerMs);

We should drop this parameter when creating the manager and instead use the global _bulkLingerMs variable.

[adrienbu]

Note: This can be easily tested from your html test page by setting the lingerMs option to 10000. Log is still sent about half a second after button click instead of 10s.