hdfs: simpler deployment

Signed-off-by: Austin Seipp <aseipp@pobox.com>
spark: simplify deployment

Signed-off-by: Austin Seipp <aseipp@pobox.com>
hdfs: expose HTTP port.

Signed-off-by: Austin Seipp <aseipp@pobox.com>
riemann-server: Install dash, fix bind addrs

Signed-off-by: Austin Seipp <aseipp@pobox.com>