Turn off guard pages for distributions/robust/associative/stress/many_domain

Guard pages are already off for
distributions/robust/associative/stress/many_array and this is a similar test,
that takes way too much time with guard pages on.
Merge pull request #268 from ronawho/qthreads-timeouts

Turn off guard pages for distributions/robust/associative/stress/many_domain

[trivial, not reviewed]

Guard pages are already off for
distributions/robust/associative/stress/many_array and this is a similar test,
that takes way too much time with guard pages on.