CBQE-1522: skip autofailover *timeout_pause tests

that use signals SIGSTOP and SIGCONT
the signals SIGSTOP and SIGCONT do not exist for Windows
we need to skip test_30s_timeout_pause and test_60s_timeout_pause in windows

Change-Id: I0307cafbb33e544154066e44807abdb5bc3c88d4
Reviewed-on: http://review.couchbase.org/28390
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Andrei Baranouski <andrei.baranouski@gmail.com>