rftest1: Add parameter to use zeromq

When you run rftest1 with ``-z``, it will not start or reset MongoDB.

Signed-off-by: Joe Stringer <joestringernz@gmail.com>
Add fetch scripts for ZeroMQ

Specifying the ``-z`` option to build.sh will cause it to fetch ZeroMQ.

Signed-off-by: Joe Stringer <joestringernz@gmail.com>