Bind both to IPv4 and IPv6 with special "any" value
Bind both to IPv4 and IPv6 with special "any" value

This also removes need in special wrapper to handle atom as default
for config:get call.

COUCHDB-2783

fkaempfer/couchdb,fkaempfer/couchdb,fkaempfer/couchdb,cloudant/couchdb-couch,cloudant/couchdb-couch,fkaempfer/couchdb,smithsz/couchdb-couch,smithsz/couchdb-couch,fkaempfer/couchdb,apache/couchdb-couch,KlausTrainer/couchdb-couch,KlausTrainer/couchdb-couch,smithsz/couchdb-couch,apache/couchdb-couch,fkaempfer/couchdb,apache/couchdb-couch,cloudant/couchdb-couch,KlausTrainer/couchdb-couch