ISPN-4524 ClusteredCacheWithAsyncDirTest.testCombinationOfFilters random...

... failures

https://issues.jboss.org/browse/ISPN-4524

This test has a 100% success rate on a multicore physical machine (the whole query suite runs on under 50 seconds on my machine), but the default timeout makes it fragile on saturated CPU situations such as low-end ec2 instances (where TeamCity runs on)
I was hoping to change the limit for core, too. But I tried it on my machine and it doubled the run time for the core test suite (8min -> 15min, with TRACE logging). So I guess this will have to do, for now.