Fixed Duration to use a base unit of seconds.

From: Ben Mahler <benjamin.mahler@gmail.com>
Review: https://reviews.apache.org/r/9765

git-svn-id: https://svn.apache.org/repos/asf/incubator/mesos/trunk@1456307 13f79535-47bb-0310-9956-ffa450edef68
Fixed gtest environment to filter templated tests with a typename
that includes 'CgroupsIsolationModule'.

From: Ben Mahler <benjamin.mahler@gmail.com>
Review: https://reviews.apache.org/r/9906

git-svn-id: https://svn.apache.org/repos/asf/incubator/mesos/trunk@1456308 13f79535-47bb-0310-9956-ffa450edef68