Real-Time TeamCity Test Reporting

[Ilya Kasnacheev-2]

Hello!

I have merged https://issues.apache.org/jira/browse/IGNITE-12934
This means that tests will now be reported to TeamCity as they go, instead
of being registered only when the suite is complete (and discarded if the
suite fails).

I have also improved handling of `assertion violated' tests. Please allow
our bot some time to settle.

Regards,
Ilya.