Make timeout configurable

[Igor-lkm]

Problem: on some environments default timeout from tcp-ping probe (5000ms) is not enough.

This PR would replace probe with ping and introduced optional timeout, by default equal to 5000ms as before.

[CLAassistant]

All committers have signed the CLA.

[Igor-lkm]

Also there were some problems with tests, caused by latency/delays, when tests are executed on travic-ci.

in waitAndGetTraces 1000ms is not enough to get results, work stable with 2000ms.
Before the request we need to connect successfully to zipkin. As there is no way we can find it out (event or promise returned) make sense to add startupDelay to give appmetrics-zipkin package time to connect.