[twconfig] Set default value for "interface" to 0.0.0.0 This value means "all IP addresses on this host", which seems to fit with "default to everywhere" that's documented. Closes #15135610.

addressbook
basket
blog
book
calendar
comment
company
email
file
folder
i18ncontent
keyword
link
mailinglist
person
tag
timeseries
vcsfile