make flush-all.t more reliable
can end up sitting on the border of a second. better fix would be to poll the
server until it thinks at least 4s have passed, since in weird/slow scenarios
the tests can run faster than the daemon.
@@ -40,7 +40,7 @@ is(scalar <$sock>, "OK\r\n", "did flush_all in future");
print $sock "set foo 0 0 4\r\n1234\r\n";
is(scalar <$sock>, "STORED\r\n", "stored foo = '1234'");
mem_get_is($sock, "foo", '1234');
-sleep(3);
+sleep(5);
mem_get_is($sock, "foo", undef);
print $sock "set foo 0 0 5\r\n12345\r\n";
