Tests: Limit CPUs visible to JUnit-algos tests
Tests: Limit CPUs visible to JUnit-algos tests

This should resolve timeouts in machines with high #cores

h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3,h2oai/h2o-3