the taskset command used for the cpu system test seems
to be failing under vmware, causing a test failure. we
can try the taskset command and skip the test if it doesn't
work.
(cherry picked from commit a8a49bb783)
Add a test to check BIND 9 honors CPU affinity mask. This requires
some changes to the start script, to construct the named command.
(cherry picked from commit f1a097964c)