data/defaults: Fix pgbouncer's default listen_addr list
data/defaults: Fix pgbouncer's default listen_addr list

So that we can connect locally as well on pgbouncer instance

SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site,SoftwareHeritage/puppet-swh-site