make last remaining two bigcouch processes listen only on 127.0.0.1
when we resolve #4888 (closed), we only have two remaining bigcouch processes listening on 0.0.0.0:
Proto Recv-Q Send-Q Local Address Foreign Address State User Inode PID/Program name tcp 0 0 0.0.0.0:5984 0.0.0.0:* LISTEN 103 5282454 28558/beam.smp udp 0 0 0.0.0.0:36776 0.0.0.0:* 103 5282446 28558/beam.smp
(from redmine: created on 2013-12-29, closed on 2014-05-05)