Stop logstash-web from starting.

The logstash web process was chewing up lots of CPU, due to a bad
cmdline option (-l) in the upstart config.

This basically mean that the JVM kept trying to start, taking up resource.

We do not use logstash-web, as Kibana does what we need, so safest thing is to
just not start it.
Merge branch 'pkg_update_redux' into pkg_update_redux_plus_input_output

Conflicts:
	logstash/logstash.sls