chef: Check-in missed file from rmqnodes PR.
chef: Check-in missed file from rmqnodes PR.

Forgot to checkin a file; the haproxy template was
edited to reference the rmqnodes, but the variable needs
to be defined in the recipe as well.

Signed-off-by: Tyler Stachecki <ac19b26ca570cbd1d833044669caf79cb1d18c48@bloomberg.net>

bloomberg/chef-bcpc,bloomberg/chef-bcpc,bloomberg/chef-bcpc,bloomberg/chef-bcpc