MB-7058 Don't create /var/{log,lib,run}/couchdb directories.

Change-Id: If3ff61ec7131392548809689f96b09dfa08febd6
Reviewed-on: http://review.couchbase.org/26648
Tested-by: Aliaksey Artamonau <aliaksiej.artamonau@gmail.com>
Reviewed-by: Aliaksey Kandratsenka <alkondratenko@gmail.com>