Load testing tool cannot cope with 5 cps loads

[atsakiridis]

Seems that either browser fails to send the ajax message properly to the test tool to respawn, or the test tool cannot handle the load, which is why it happens 5 cps. the ajax messages from the browser are sent in bursts of 5.

Even when improving the 'respawn' thread to handle requests in threads and increasing the socket receive buffer length, there are still cases where the http server is unable to process some incoming browser messages sporadically

Check RestComm/restcomm-web-sdk#74 for earlier activities