After the test-script fork()s, the client half now sleeps for two

After the test-script fork()s, the client half now sleeps for two
seconds rather then one: the old sleep(1) doesn't seem to reliably
give long enough for all four of the servers to get started up in the
Debian package-building process (id-pbuild.sh) on squeeze, so that
nearly always at least one of the four builds hangs in the test suite,
with the sever waiting for an already-dead client to connect.  And
that means that the whole build fails.  Hopefully this will fix that.