Don't redirect ssl_proxy's stderr to stdout.

So that we get cleaner messages from it when running under
cluster_run.

Change-Id: I657f7efce70762dc083b5653c53e8037a8a794af
Reviewed-on: http://review.couchbase.org/37753
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>
Adapt ns_log_browser to new log format.

Change-Id: I7a9ba554d198296220741b37d0071aa26a29d64f
Reviewed-on: http://review.couchbase.org/37754
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>