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)
How about defining `infinispan.test.parallel.threads` to be 5 in `query/pom.xml`, wouldn't that work?