[server] Drop update_config method of source
It does not make sense anymore to update the config of a source instance
(subclass of cubicweb.server.sources.AbstractSource) now that they are always
built from database information (CWSource). In datafeed and ldapfeed, we
move all code from "update_config" method in "init" method.
This changeset fixes LDAPFeedUserDeletionTC.test_a_filter_inactivate() failure
(unittest_ldapsource.py) introduces in previous changeset.
^build$
^dist$
\.egg-info$
^.tox$
^.cache$
\.pyc$
\.pyo$
\.bak$
\.old$
\~$
\#.*?\#$
\.swp$
^doc/book/en/apidoc$
\.old$
\.pybuild
cubicweb/server/test/data/slapd.conf
debian/python-cubicweb
debian/*.log
debian/*.substvars
debian/cubicweb-doc
debian/cubicweb
debian/files
syntax: regexp
.*/data.*/database/.*
.*/data/ldapdb/.*
.*/data/uicache/
.*/data/libpython/cubicweb_.*/i18n/.*\.po
^doc/html/
^doc/doctrees/
^doc/book/en/devweb/js_api/
^doc/_build
^doc/js_api/
test-results.xml