Testsuite: Investigate failures and make it more stable

[jajik]

The testsuite fails occasionally, mainly main tests and JBCS-1236 tests. Investigate and fix those instabilities if possible.

[jajik]

It seems that at least some of the failures are linked to tomcat's connector ports (more precisely to the custom mechanism we use). That will be addressed with #140 using portOffset.

[rhusar]

It seems that at least some of the failures are linked to tomcat's connector ports (more precisely to the custom mechanism we use). That will be addressed with #140 using portOffset.

I will try to get those fixed next week.

[jajik]

Ack, thank you.

[jajik]

Given the changes we made since opening this issue and the fact that we don't experience random fails anymore, I'm closing the issue now.